#1F528B#1F528B

#1F528B is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.5% C 0.109 H 253.7°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#1F528B
RGB	rgb(31, 82, 139)
HSL	hsl(212, 64%, 33%)
HSV	hsv(212, 78%, 55%)
CMYK	cmyk(77.7%, 41%, 0%, 45.5%)
CIE-LAB	lab(34.37, 4.17, -36.54)
CIE-LCH	lch(34.37, 36.77, 276.51°)
OKLab	oklab(43.5% -0.0306 -0.1043)
OKLCH	oklch(43.5% 0.109 253.7)
XYZ	xyz(8.2408, 8.1890, 25.5674)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F528B #8B581F

analogous

#1F888B #1F528B #221F8B

triadic

#1F528B #8B1F52 #528B1F

tetradic

#1F528B #8B1F88 #8B581F #1F8B22

square

#1F528B #8B1F88 #8B581F #1F8B22

split-complementary

#1F528B #8B221F #888B1F

monochromatic

#091727 #143459 #1F528B #2A70BD #4D8ED7

Accessibility & contrast

On white

7.96

#1F528B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#1F528B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F528B

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F528B	#FFFFFF	#000000	##FFFFFF
##1F528B	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37568D

Deuteranopia (green-blind)

#254C8A

Tritanopia (blue-blind)

#005F67

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1f528b;
/* rgb */ color: rgb(31, 82, 139);
/* oklch */ color: oklch(43.5% 0.109 253.7);

Tailwind

colors: {
  custom: {
    50: '#6b82ad',
    500: '#1f528b',
    950: '#000000',
  },
}

SCSS

$custom: #1f528b;
$custom-light: #6b82ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f528b",
  "rgb": {
    "r": 31,
    "g": 82,
    "b": 139
  },
  "hsl": {
    "h": 211.667,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.43502,
    "c": 0.10872,
    "h": 253.7
  },
  "luminance": 0.0819
}

Semantic roles & 50–950 ramp

primary

#1F528B

secondary

#BA864C

accent

#9841E7

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1F528B

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

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