#1B4F88#1B4F88

#1B4F88 is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.4% C 0.109 H 253.5°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F88
RGB	rgb(27, 79, 136)
HSL	hsl(211, 67%, 32%)
HSV	hsv(211, 80%, 53%)
CMYK	cmyk(80.1%, 41.9%, 0%, 46.7%)
CIE-LAB	lab(33.14, 4.45, -36.67)
CIE-LCH	lch(33.14, 36.94, 276.92°)
OKLab	oklab(42.45% -0.031 -0.1048)
OKLCH	oklch(42.45% 0.109 253.5)
XYZ	xyz(7.6902, 7.6016, 24.3497)
Luminance	0.0760 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F88 #88541B

analogous

#1B8688 #1B4F88 #1E1B88

triadic

#1B4F88 #881B4F #4F881B

tetradic

#1B4F88 #881B86 #88541B #1B881E

square

#1B4F88 #881B86 #88541B #1B881E

split-complementary

#1B4F88 #881E1B #86881B

monochromatic

#071422 #113155 #1B4F88 #256DBB #448BDA

Accessibility & contrast

On white

8.33

#1B4F88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1B4F88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F88

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F88	#FFFFFF	#000000	##FFFFFF
##1B4F88	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33538A

Deuteranopia (green-blind)

#214987

Tritanopia (blue-blind)

#005D65

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b4f88;
/* rgb */ color: rgb(27, 79, 136);
/* oklch */ color: oklch(42.4% 0.109 253.5);

Tailwind

colors: {
  custom: {
    50: '#697fab',
    500: '#1b4f88',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f88;
$custom-light: #697fab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f88",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 136
  },
  "hsl": {
    "h": 211.376,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.42446,
    "c": 0.10931,
    "h": 253.5
  },
  "luminance": 0.07603
}

Semantic roles & 50–950 ramp

primary

#1B4F88

secondary

#BB8244

accent

#983EEA

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B4F88

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

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