#1F2B59#1F2B59

#1F2B59 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.6% C 0.084 H 269.9°. Best body text is #FFFFFF at 13.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B59
RGB	rgb(31, 43, 89)
HSL	hsl(228, 48%, 24%)
HSV	hsv(228, 65%, 35%)
CMYK	cmyk(65.2%, 51.7%, 0%, 65.1%)
CIE-LAB	lab(18.97, 11.24, -29.36)
CIE-LCH	lch(18.97, 31.44, 290.95°)
OKLab	oklab(30.56% -0.0002 -0.0839)
OKLCH	oklch(30.56% 0.084 269.9)
XYZ	xyz(3.2315, 2.7401, 9.8078)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B59 #594D1F

analogous

#1F4859 #1F2B59 #301F59

triadic

#1F2B59 #591F2B #2B591F

tetradic

#1F2B59 #591F48 #594D1F #1F5930

square

#1F2B59 #591F48 #594D1F #1F5930

split-complementary

#1F2B59 #59301F #48591F

monochromatic

#080B17 #0F152C #1F2B59 #2F4186 #3F57B4

Accessibility & contrast

On white

13.57

#1F2B59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1F2B59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B59

13.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B59	#FFFFFF	#000000	##FFFFFF
##1F2B59	1.00	13.57	1.55	13.57
#FFFFFF	13.57	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14315B

Deuteranopia (green-blind)

#0A2C58

Tritanopia (blue-blind)

#00353D

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f2b59;
/* rgb */ color: rgb(31, 43, 89);
/* oklch */ color: oklch(30.6% 0.084 269.9);

Tailwind

colors: {
  custom: {
    50: '#616488',
    500: '#1f2b59',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b59;
$custom-light: #616488;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b59",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 89
  },
  "hsl": {
    "h": 227.586,
    "s": 48.333,
    "l": 23.529
  },
  "oklch": {
    "l": 0.30561,
    "c": 0.0839,
    "h": 269.9
  },
  "luminance": 0.0274
}

Semantic roles & 50–950 ramp

primary

#1F2B59

secondary

#8E7F46

accent

#BC50D8

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050B

muted

#79797C

Preview Lab

Preview with #1F2B59

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

Preview Lab → · Contrast checker → · Palette generator →