#1F4E87#1F4E87

#1F4E87 is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.3% C 0.108 H 255.1°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E87
RGB	rgb(31, 78, 135)
HSL	hsl(213, 63%, 33%)
HSV	hsv(213, 77%, 53%)
CMYK	cmyk(77%, 42.2%, 0%, 47.1%)
CIE-LAB	lab(32.89, 5.23, -36.44)
CIE-LCH	lch(32.89, 36.82, 278.17°)
OKLab	oklab(42.27% -0.0277 -0.1041)
OKLCH	oklch(42.27% 0.108 255.1)
XYZ	xyz(7.6610, 7.4885, 23.9586)
Luminance	0.0749 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E87 #87581F

analogous

#1F8287 #1F4E87 #241F87

triadic

#1F4E87 #871F4E #4E871F

tetradic

#1F4E87 #871F82 #87581F #1F8724

square

#1F4E87 #871F82 #87581F #1F8724

split-complementary

#1F4E87 #87241F #82871F

monochromatic

#081423 #143155 #1F4E87 #2A6BB9 #4B8AD6

Accessibility & contrast

On white

8.41

#1F4E87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1F4E87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E87

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E87	#FFFFFF	#000000	##FFFFFF
##1F4E87	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#335389

Deuteranopia (green-blind)

#214986

Tritanopia (blue-blind)

#005B64

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f4e87;
/* rgb */ color: rgb(31, 78, 135);
/* oklch */ color: oklch(42.3% 0.108 255.1);

Tailwind

colors: {
  custom: {
    50: '#6a7faa',
    500: '#1f4e87',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e87;
$custom-light: #6a7faa;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e87",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 135
  },
  "hsl": {
    "h": 212.885,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.42271,
    "c": 0.10775,
    "h": 255.1
  },
  "luminance": 0.07489
}

Semantic roles & 50–950 ramp

primary

#1F4E87

secondary

#B8864A

accent

#9C42E6

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1F4E87

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

Preview Lab → · Contrast checker → · Palette generator →