#1F4077#1F4077

#1F4077 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.8% C 0.102 H 260.0°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#1F4077
RGB	rgb(31, 64, 119)
HSL	hsl(218, 59%, 29%)
HSV	hsv(218, 74%, 47%)
CMYK	cmyk(73.9%, 46.2%, 0%, 53.3%)
CIE-LAB	lab(27.54, 8.33, -35.03)
CIE-LCH	lch(27.54, 36.01, 283.38°)
OKLab	oklab(37.8% -0.0176 -0.1002)
OKLCH	oklch(37.8% 0.102 260)
XYZ	xyz(5.7270, 5.2894, 18.1683)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4077 #77561F

analogous

#1F6C77 #1F4077 #2A1F77

triadic

#1F4077 #771F40 #40771F

tetradic

#1F4077 #771F6C #77561F #1F772A

square

#1F4077 #771F6C #77561F #1F772A

split-complementary

#1F4077 #772A1F #6C771F

monochromatic

#060D18 #122646 #1F4077 #2C5AA8 #4377CE

Accessibility & contrast

On white

10.20

#1F4077 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1F4077 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4077

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4077	#FFFFFF	#000000	##FFFFFF
##1F4077	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254579

Deuteranopia (green-blind)

#143D76

Tritanopia (blue-blind)

#004D55

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f4077;
/* rgb */ color: rgb(31, 64, 119);
/* oklch */ color: oklch(37.8% 0.102 260.0);

Tailwind

colors: {
  custom: {
    50: '#67749e',
    500: '#1f4077',
    950: '#000000',
  },
}

SCSS

$custom: #1f4077;
$custom-light: #67749e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4077",
  "rgb": {
    "r": 31,
    "g": 64,
    "b": 119
  },
  "hsl": {
    "h": 217.5,
    "s": 58.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37797,
    "c": 0.10177,
    "h": 260
  },
  "luminance": 0.0529
}

Semantic roles & 50–950 ramp

primary

#1F4077

secondary

#AB8547

accent

#A746E2

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #1F4077

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

Preview Lab → · Contrast checker → · Palette generator →