#1F538D#1F538D

#1F538D is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.9% C 0.110 H 253.7°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#1F538D
RGB	rgb(31, 83, 141)
HSL	hsl(212, 64%, 34%)
HSV	hsv(212, 78%, 55%)
CMYK	cmyk(78%, 41.1%, 0%, 44.7%)
CIE-LAB	lab(34.80, 4.31, -37.07)
CIE-LCH	lch(34.80, 37.32, 276.63°)
OKLab	oklab(43.88% -0.031 -0.1059)
OKLCH	oklch(43.88% 0.11 253.7)
XYZ	xyz(8.4643, 8.3999, 26.3694)
Luminance	0.0840 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F538D #8D591F

analogous

#1F8A8D #1F538D #221F8D

triadic

#1F538D #8D1F53 #538D1F

tetradic

#1F538D #8D1F8A #8D591F #1F8D22

square

#1F538D #8D1F8A #8D591F #1F8D22

split-complementary

#1F538D #8D221F #8A8D1F

monochromatic

#091829 #14355B #1F538D #2A71BF #4E8FD8

Accessibility & contrast

On white

7.84

#1F538D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#1F538D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F538D

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F538D	#FFFFFF	#000000	##FFFFFF
##1F538D	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37578F

Deuteranopia (green-blind)

#254D8C

Tritanopia (blue-blind)

#006169

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f538d;
/* rgb */ color: rgb(31, 83, 141);
/* oklch */ color: oklch(43.9% 0.110 253.7);

Tailwind

colors: {
  custom: {
    50: '#6b82af',
    500: '#1f538d',
    950: '#000000',
  },
}

SCSS

$custom: #1f538d;
$custom-light: #6b82af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f538d",
  "rgb": {
    "r": 31,
    "g": 83,
    "b": 141
  },
  "hsl": {
    "h": 211.636,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.43875,
    "c": 0.11033,
    "h": 253.7
  },
  "luminance": 0.08401
}

Semantic roles & 50–950 ramp

primary

#1F538D

secondary

#BB874D

accent

#9841E7

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1F538D

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

Preview Lab → · Contrast checker → · Palette generator →