bluecoolCC0 survey name

Dusk #4E5481

Dusk is a mid-tone, muted cool color (#4E5481; HSL 233° 25% 41%). Name from the public-domain xkcd color survey (CC0), where it was contributed as “dusk”.

Use cases: Trust UI · Corporate accents

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Families: Blues · Slate Colors

Color values

FormatValue
HEX#4E5481
RGBrgb(78, 84, 129)
HSLhsl(233, 25%, 41%)
HSVhsv(233, 40%, 51%)
OKLCHoklch(46.06% 0.074 277.3)
OKLaboklab(46.06% 0.0093 -0.0729)
CMYKcmyk(39.5%, 34.9%, 0%, 49.4%)
XYZxyz(10.2735, 9.5449, 22.0657)
CIE-LABlab(37.0, 9.7, -26.1)
CIE-LCHlch(37.0, 27.8, 290.4°)
Luminance0.095 (WCAG relative)
/* Dusk */ --dusk: #4e5481; color: #4e5481; background-color: #4e5481;

Source: xkcd color survey name (public domain, CC0). CSS keyword: dusk.

Collections: Muted Colors

Shade scale

Perceptual 50–950 scale, interpolated in CIE-LAB. Step 500 is the base color. Edit in the shade generator →

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OKLCH ramp (perceptually uniform, modern CSS)

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950

Shades (toward black)

#474c73 #3f4366 #383b59 #31334c #2a2c40 #232434 #1c1d28 #15161d #0d0d12 #000000

Tints (toward white)

#5f638d #707399 #8284a6 #9394b2 #a4a5be #b6b7cb #c8c8d8 #dadae5 #ececf2 #ffffff

Tones (toward gray)

#50547d #515579 #525574 #535570 #54556c #555668 #565664 #56565f #57575b #575757

Color harmonies

Complementary

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#4E5481
#817B4E
#4e5481 #817b4e

Analogous

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#4E6D81
#4E5481
#614E81
#4e6d81 #4e5481 #614e81

Triadic

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#4E5481
#814E54
#54814E
#4e5481 #814e54 #54814e

Tetradic

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#4E5481
#814E6D
#817B4E
#4E8161
#4e5481 #814e6d #817b4e #4e8161

Square

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#4E5481
#814E6D
#817B4E
#4E8161
#4e5481 #814e6d #817b4e #4e8161

Split Complementary

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#4E5481
#81614E
#6D814E
#4e5481 #81614e #6d814e

Monochromatic

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#202235
#373B5B
#4E5481
#686FA4
#8E94BB
#202235 #373b5b #4e5481 #686fa4 #8e94bb

Accessibility & contrast

7.22
#4E5481 on #FFFFFF
AA text ✓AA large ✓AAA text ✓UI 3:1 ✓
2.91
#4E5481 on #000000
AA text ✗AA large ✗AAA text ✗UI 3:1 ✗

Best text on dusk

7.22
#FFFFFF text

WCAG 2.1: AA needs ≥4.5:1 for normal text, ≥3:1 for large text and UI components; AAA needs ≥7:1 / ≥4.5:1. Open the contrast checker →

Color blindness preview

Simulation using the Machado et al. (2009) physiological model, severity 1.0. This is an approximation of perception — not a medical assessment.

Normal vision
Protanopia (red-blind)
#455983
Deuteranopia (green-blind)
#425580
Tritanopia (blue-blind)
#3F5D64

Closest named colors

Nearest matches by CIEDE2000 perceptual distance (ΔE₀₀) across the full color database.

ColorNameΔE₀₀
Twilight #4E518B2.83
Dusky Blue #475F946.30
Denim Blue #3B5B927.27
Blueberry #4641968.68
Darkslateblue #483D8B8.91
Dusk Blue #26538D9.11

Colors that go with dusk

Top matches by hue harmony, contrast and saturation compatibility.

Periwinkle #CCCCFF
4.7:1
Same hue family as dusk (Δh 7°) — guaranteed harmony
Lavender #B39DDB
3.0:1
Analogous hue (Δh ≈28°) — neighbors on the color wheel
Dusty Pink #D8A7B1
3.5:1
Triadic harmony (Δh ≈115°) — balanced three-way contrast
Taupe #8B7D6B
1.8:1
Split-complementary angle (Δh ≈161°) — strong but softer than direct complement
Beige #F5F5DC
6.5:1
Complementary hue (Δh ≈173°) — maximum hue contrast

Values computed from the sRGB color model. CMYK is the naive sRGB conversion without an ICC profile. RGB percentages may differ between color-managed applications.