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Yellow · 🗳️ XKCD

Olive Green

#677A04

A deep vivid yellow with natural undertones. Named by popular vote in the XKCD color survey — a crowdsourced color name used by 30+ respondents.

Generate palette with this color →

Emotion & Mood

Emotion
MysteriousVibrantFresh
Mood
IntenseContemplative

Personality & Symbolism

ConfidentStrongAssertive
Recommended Use

Suitable for accent colors and attention-grabbing elements.

Color Harmonies

Complementary
#677a04
+
#18047c
Split Complementary
#042c7c
#677a04
#54047c
Darker Shades
Lighter Tints

Visual Analysis

Hue70°
Saturation94%
Lightness25%
This is a dark color with high saturation. It falls in the yellow hue family (70°).

Technical Values

HEX#677A04
RGBrgb(103, 122, 4)
HSLhsl(70, 94%, 25%)
CMYK16%, 0%, 97%, 52%
ContrastDark
CSSbackground: #677a04;

Accessibility — WCAG Contrast

White Text Sample
The quick brown fox jumps.
4.81:1
AA AAA
Black Text Sample
The quick brown fox jumps.
4.36:1
AA AAA

WCAG 2.1 requires a contrast ratio of ≥4.5:1 for AA (normal text) and ≥7:1 for AAA. Best text color for this background: white (#FFFFFF).

Color Psychology

Color Temperature

This color sits in the transitional zone between warm and cool (hue 70°), creating a balanced sensation that's neither energetic nor cold. It's psychologically versatile.

Visual Weight

At 25% lightness, this color carries substantial visual weight. Dark colors add perceived importance and gravity to elements. Research shows dark elements are perceived as 10-30% heavier.

Saturation Impact

The high saturation (94%) creates a vibrant, attention-demanding presence. Highly saturated colors are processed faster by the human brain — reaction time decreases by approximately 50ms compared to desaturated variants.

Design Applications

Education & Learning

Stimulates mental activity and optimism — great for educational platforms, children's products, and attention-grabbing CTAs.

Warning & Highlights

High visibility for important notices, safety signage, and UI highlight states.

Dark Theme & UI

Deep tones reduce eye strain in dark mode — perfect for code editors, media players, and night-mode interfaces.

CTAs & Accents

High saturation draws attention — use for primary buttons, notification badges, and important interactive elements.

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