#1F4F8A#1F4F8A

#1F4F8A is a dark, moderate cyan. Relative luminance 0.077; OKLCH L 42.7% C 0.111 H 255.4°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#1F4F8A
RGB	rgb(31, 79, 138)
HSL	hsl(213, 63%, 33%)
HSV	hsv(213, 78%, 54%)
CMYK	cmyk(77.5%, 42.8%, 0%, 45.9%)
CIE-LAB	lab(33.39, 5.76, -37.50)
CIE-LCH	lch(33.39, 37.94, 278.73°)
OKLab	oklab(42.71% -0.028 -0.1072)
OKLCH	oklch(42.71% 0.111 255.4)
XYZ	xyz(7.9468, 7.7173, 25.1106)
Luminance	0.0772 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4F8A #8A5A1F

analogous

#1F848A #1F4F8A #241F8A

triadic

#1F4F8A #8A1F4F #4F8A1F

tetradic

#1F4F8A #8A1F84 #8A5A1F #1F8A24

square

#1F4F8A #8A1F84 #8A5A1F #1F8A24

split-complementary

#1F4F8A #8A241F #848A1F

monochromatic

#091626 #143258 #1F4F8A #2A6CBC #4C8BD7

Accessibility & contrast

On white

8.26

#1F4F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1F4F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4F8A

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4F8A	#FFFFFF	#000000	##FFFFFF
##1F4F8A	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#32548C

Deuteranopia (green-blind)

#204A89

Tritanopia (blue-blind)

#005D65

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4f8a;
/* rgb */ color: rgb(31, 79, 138);
/* oklch */ color: oklch(42.7% 0.111 255.4);

Tailwind

colors: {
  custom: {
    50: '#6b7fac',
    500: '#1f4f8a',
    950: '#000000',
  },
}

SCSS

$custom: #1f4f8a;
$custom-light: #6b7fac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4f8a",
  "rgb": {
    "r": 31,
    "g": 79,
    "b": 138
  },
  "hsl": {
    "h": 213.084,
    "s": 63.314,
    "l": 33.137
  },
  "oklch": {
    "l": 0.42714,
    "c": 0.11079,
    "h": 255.4
  },
  "luminance": 0.07718
}

Semantic roles & 50–950 ramp

primary

#1F4F8A

secondary

#BA884B

accent

#9C41E6

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1F4F8A

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

Preview Lab → · Contrast checker → · Palette generator →