#1B2F5D#1B2F5D

#1B2F5D is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.6% C 0.086 H 264.4°. Best body text is #FFFFFF at 13.03:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F5D
RGB	rgb(27, 47, 93)
HSL	hsl(222, 55%, 24%)
HSV	hsv(222, 71%, 36%)
CMYK	cmyk(71%, 49.5%, 0%, 63.5%)
CIE-LAB	lab(20.27, 9.13, -29.94)
CIE-LCH	lch(20.27, 31.30, 286.95°)
OKLab	oklab(31.58% -0.0085 -0.0856)
OKLCH	oklch(31.58% 0.086 264.4)
XYZ	xyz(3.4436, 3.0560, 10.7622)
Luminance	0.0306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F5D #5D491B

analogous

#1B505D #1B2F5D #281B5D

triadic

#1B2F5D #5D1B2F #2F5D1B

tetradic

#1B2F5D #5D1B50 #5D491B #1B5D28

square

#1B2F5D #5D1B50 #5D491B #1B5D28

split-complementary

#1B2F5D #5D281B #505D1B

monochromatic

#070C18 #0D172E #1B2F5D #29478C #375FBC

Accessibility & contrast

On white

13.03

#1B2F5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1B2F5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F5D

13.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F5D	#FFFFFF	#000000	##FFFFFF
##1B2F5D	1.00	13.03	1.61	13.03
#FFFFFF	13.03	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18345F

Deuteranopia (green-blind)

#0C2E5C

Tritanopia (blue-blind)

#003A41

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b2f5d;
/* rgb */ color: rgb(27, 47, 93);
/* oklch */ color: oklch(31.6% 0.086 264.4);

Tailwind

colors: {
  custom: {
    50: '#60678b',
    500: '#1b2f5d',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f5d;
$custom-light: #60678b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f5d",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 93
  },
  "hsl": {
    "h": 221.818,
    "s": 55,
    "l": 23.529
  },
  "oklch": {
    "l": 0.31577,
    "c": 0.08607,
    "h": 264.4
  },
  "luminance": 0.03056
}

Semantic roles & 50–950 ramp

primary

#1B2F5D

secondary

#937A41

accent

#B149DE

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #1B2F5D

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

Preview Lab → · Contrast checker → · Palette generator →