#1B236F#1B236F

#1B236F is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.6% C 0.130 H 271.5°. Best body text is #FFFFFF at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#1B236F
RGB	rgb(27, 35, 111)
HSL	hsl(234, 61%, 27%)
HSV	hsv(234, 76%, 44%)
CMYK	cmyk(75.7%, 68.5%, 0%, 56.5%)
CIE-LAB	lab(18.29, 24.98, -44.92)
CIE-LCH	lch(18.29, 51.40, 299.08°)
OKLab	oklab(30.57% 0.0034 -0.1298)
OKLCH	oklch(30.57% 0.13 271.5)
XYZ	xyz(3.9213, 2.5824, 15.3276)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B236F #6F671B

analogous

#1B4D6F #1B236F #3D1B6F

triadic

#1B236F #6F1B23 #236F1B

tetradic

#1B236F #6F1B4D #6F671B #1B6F3D

square

#1B236F #6F1B4D #6F671B #1B6F3D

split-complementary

#1B236F #6F3D1B #4D6F1B

monochromatic

#060819 #0F133E #1B236F #2733A0 #3645CE

Accessibility & contrast

On white

13.85

#1B236F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1B236F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B236F

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B236F	#FFFFFF	#000000	##FFFFFF
##1B236F	1.00	13.85	1.52	13.85
#FFFFFF	13.85	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003171

Deuteranopia (green-blind)

#00296E

Tritanopia (blue-blind)

#003745

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b236f;
/* rgb */ color: rgb(27, 35, 111);
/* oklch */ color: oklch(30.6% 0.130 271.5);

Tailwind

colors: {
  custom: {
    50: '#655e99',
    500: '#1b236f',
    950: '#000000',
  },
}

SCSS

$custom: #1b236f;
$custom-light: #655e99;
$custom-dark: #000000;

JSON

{
  "hex": "#1b236f",
  "rgb": {
    "r": 27,
    "g": 35,
    "b": 111
  },
  "hsl": {
    "h": 234.286,
    "s": 60.87,
    "l": 27.059
  },
  "oklch": {
    "l": 0.30565,
    "c": 0.12988,
    "h": 271.5
  },
  "luminance": 0.02583
}

Semantic roles & 50–950 ramp

primary

#1B236F

secondary

#A49B42

accent

#D544E4

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #1B236F

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

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