#181BA1#181BA1

#181BA1 is a dark, highly saturated blue. Relative luminance 0.036; OKLCH L 34.9% C 0.203 H 268.7°. Best body text is #FFFFFF at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#181BA1
RGB	rgb(24, 27, 161)
HSL	hsl(239, 74%, 36%)
HSV	hsv(239, 85%, 63%)
CMYK	cmyk(85.1%, 83.2%, 0%, 36.9%)
CIE-LAB	lab(22.13, 47.22, -69.98)
CIE-LCH	lch(22.13, 84.42, 304.01°)
OKLab	oklab(34.92% -0.0047 -0.2026)
OKLCH	oklch(34.92% 0.203 268.7)
XYZ	xyz(7.1994, 3.5504, 34.0171)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181BA1 #A19E18

analogous

#1860A1 #181BA1 #5A18A1

triadic

#181BA1 #A1181B #1BA118

tetradic

#181BA1 #A11860 #A19E18 #18A15A

square

#181BA1 #A11860 #A19E18 #18A15A

split-complementary

#181BA1 #A15A18 #60A118

monochromatic

#080936 #10126C #181BA1 #2024D6 #4F52E5

Accessibility & contrast

On white

12.28

#181BA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#181BA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181BA1

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181BA1	#FFFFFF	#000000	##FFFFFF
##181BA1	1.00	12.28	1.71	12.28
#FFFFFF	12.28	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA5

Deuteranopia (green-blind)

#002E9F

Tritanopia (blue-blind)

#004660

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #181ba1;
/* rgb */ color: rgb(24, 27, 161);
/* oklch */ color: oklch(34.9% 0.203 268.7);

Tailwind

colors: {
  custom: {
    50: '#735bbe',
    500: '#181ba1',
    950: '#000000',
  },
}

SCSS

$custom: #181ba1;
$custom-light: #735bbe;
$custom-dark: #000000;

JSON

{
  "hex": "#181ba1",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 161
  },
  "hsl": {
    "h": 238.686,
    "s": 74.054,
    "l": 36.275
  },
  "oklch": {
    "l": 0.34916,
    "c": 0.20269,
    "h": 268.7
  },
  "luminance": 0.03551
}

Semantic roles & 50–950 ramp

primary

#181BA1

secondary

#C7C44E

accent

#ED37F1

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #181BA1

Body copy rendered with the generated semantic roles for this colour.

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