#1F4E88#1F4E88

#1F4E88 is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.3% C 0.109 H 255.4°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E88
RGB	rgb(31, 78, 136)
HSL	hsl(213, 63%, 33%)
HSV	hsv(213, 77%, 53%)
CMYK	cmyk(77.2%, 42.6%, 0%, 46.7%)
CIE-LAB	lab(32.96, 5.63, -36.96)
CIE-LCH	lch(32.96, 37.39, 278.66°)
OKLab	oklab(42.34% -0.0275 -0.1056)
OKLCH	oklch(42.34% 0.109 255.4)
XYZ	xyz(7.7318, 7.5168, 24.3312)
Luminance	0.0752 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E88 #88591F

analogous

#1F8288 #1F4E88 #251F88

triadic

#1F4E88 #881F4E #4E881F

tetradic

#1F4E88 #881F82 #88591F #1F8825

square

#1F4E88 #881F82 #88591F #1F8825

split-complementary

#1F4E88 #88251F #82881F

monochromatic

#081524 #143156 #1F4E88 #2A6BBA #4B89D6

Accessibility & contrast

On white

8.39

#1F4E88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1F4E88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E88

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E88	#FFFFFF	#000000	##FFFFFF
##1F4E88	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#32538A

Deuteranopia (green-blind)

#204987

Tritanopia (blue-blind)

#005C64

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1f4e88;
/* rgb */ color: rgb(31, 78, 136);
/* oklch */ color: oklch(42.3% 0.109 255.4);

Tailwind

colors: {
  custom: {
    50: '#6a7fab',
    500: '#1f4e88',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e88;
$custom-light: #6a7fab;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e88",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 136
  },
  "hsl": {
    "h": 213.143,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.42339,
    "c": 0.10917,
    "h": 255.4
  },
  "luminance": 0.07518
}

Semantic roles & 50–950 ramp

primary

#1F4E88

secondary

#B9874A

accent

#9C42E6

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1F4E88

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

Preview Lab → · Contrast checker → · Palette generator →