#1F548D#1F548D

#1F548D is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 44.1% C 0.109 H 253.0°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#1F548D
RGB	rgb(31, 84, 141)
HSL	hsl(211, 64%, 34%)
HSV	hsv(211, 78%, 55%)
CMYK	cmyk(78%, 40.4%, 0%, 44.7%)
CIE-LAB	lab(35.11, 3.65, -36.58)
CIE-LCH	lch(35.11, 36.76, 275.70°)
OKLab	oklab(44.12% -0.032 -0.1044)
OKLCH	oklch(44.12% 0.109 253)
XYZ	xyz(8.5413, 8.5541, 26.3951)
Luminance	0.0856 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F548D #8D581F

analogous

#1F8B8D #1F548D #211F8D

triadic

#1F548D #8D1F54 #548D1F

tetradic

#1F548D #8D1F8B #8D581F #1F8D21

square

#1F548D #8D1F8B #8D581F #1F8D21

split-complementary

#1F548D #8D211F #8B8D1F

monochromatic

#091829 #14365B #1F548D #2A72BF #4E91D8

Accessibility & contrast

On white

7.75

#1F548D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#1F548D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F548D

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F548D	#FFFFFF	#000000	##FFFFFF
##1F548D	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#39588F

Deuteranopia (green-blind)

#274E8C

Tritanopia (blue-blind)

#006169

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f548d;
/* rgb */ color: rgb(31, 84, 141);
/* oklch */ color: oklch(44.1% 0.109 253.0);

Tailwind

colors: {
  custom: {
    50: '#6b83af',
    500: '#1f548d',
    950: '#000000',
  },
}

SCSS

$custom: #1f548d;
$custom-light: #6b83af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f548d",
  "rgb": {
    "r": 31,
    "g": 84,
    "b": 141
  },
  "hsl": {
    "h": 211.091,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.44116,
    "c": 0.1092,
    "h": 253
  },
  "luminance": 0.08555
}

Semantic roles & 50–950 ramp

primary

#1F548D

secondary

#BB864D

accent

#9741E7

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1F548D

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

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