bluecoolCC0 survey name

Dusky Blue #475F94

Dusky Blue is a mid-tone, moderately saturated cool color (#475F94; HSL 221° 35% 43%). Name from the public-domain xkcd color survey (CC0), where it was contributed as “dusky blue”.

Use cases: Trust UI · Corporate accents

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Families: Blues

Color values

FormatValue
HEX#475F94
RGBrgb(71, 95, 148)
HSLhsl(221, 35%, 43%)
HSVhsv(221, 52%, 58%)
OKLCHoklch(49.08% 0.09 264.8)
OKLaboklab(49.08% -0.0082 -0.0899)
CMYKcmyk(52%, 35.8%, 0%, 42%)
XYZxyz(12.0343, 11.6613, 29.6279)
CIE-LABlab(40.7, 6.8, -31.9)
CIE-LCHlch(40.7, 32.6, 282.0°)
Luminance0.117 (WCAG relative)
/* Dusky Blue */ --dusky-blue: #475f94; color: #475f94; background-color: #475f94;

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

Collections: Ocean 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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950

OKLCH ramp (perceptually uniform, modern CSS)

50
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950

Shades (toward black)

#415584 #3a4c75 #344365 #2e3957 #283148 #21283a #1b202d #151820 #0d0e14 #000000

Tints (toward white)

#5a6e9e #6d7ca9 #7f8cb3 #919bbe #a3abc9 #b5bbd3 #c8ccde #dadde9 #eceef4 #ffffff

Tones (toward gray)

#4b5f8f #4f5f89 #525f84 #555f7f #575f7a #595f75 #5b5f6f #5d606a #5f6065 #606060

Color harmonies

Complementary

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#475F94
#947C47
#475f94 #947c47

Analogous

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#478594
#475F94
#554794
#478594 #475f94 #554794

Triadic

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#475F94
#94475F
#5F9447
#475f94 #94475f #5f9447

Tetradic

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#475F94
#944785
#947C47
#479455
#475f94 #944785 #947c47 #479455

Square

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#475F94
#944785
#947C47
#479455
#475f94 #944785 #947c47 #479455

Split Complementary

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#475F94
#945547
#859447
#475f94 #945547 #859447

Monochromatic

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#1F2A41
#33446B
#475F94
#647DB4
#8DA0C8
#1f2a41 #33446b #475f94 #647db4 #8da0c8

Accessibility & contrast

6.30
#475F94 on #FFFFFF
AA text ✓AA large ✓AAA text ✗UI 3:1 ✓
3.33
#475F94 on #000000
AA text ✗AA large ✓AAA text ✗UI 3:1 ✓

Best text on dusky blue

6.30
#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)
#4A6496
Deuteranopia (green-blind)
#425D93
Tritanopia (blue-blind)
#246A72

Closest named colors

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

ColorNameΔE₀₀
Denim Blue #3B5B922.40
French Blue #436BAD5.67
Dusk Blue #26538D5.91
Dusk #4E54816.30
Twilight #4E518B6.43
Denim #1560BD6.99

Colors that go with dusky blue

Top matches by hue harmony, contrast and saturation compatibility.

Navy Blue #1B2A4A
2.3:1
Same hue family as dusky blue (Δh 0°) — guaranteed harmony
Robin'S Egg #6DEDFD
4.6:1
Analogous hue (Δh ≈35°) — neighbors on the color wheel
Dusty Pink #D8A7B1
3.0:1
Triadic harmony (Δh ≈126°) — balanced three-way contrast
Beige #F5F5DC
5.7:1
Split-complementary angle (Δh ≈161°) — strong but softer than direct complement
Warm Beige #E9DCC9
4.7:1
Complementary hue (Δh ≈174°) — 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.