#1F4B88#1F4B88

#1F4B88 is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.6% C 0.113 H 257.3°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#1F4B88
RGB	rgb(31, 75, 136)
HSL	hsl(215, 63%, 33%)
HSV	hsv(215, 77%, 53%)
CMYK	cmyk(77.2%, 44.9%, 0%, 46.7%)
CIE-LAB	lab(32.03, 7.64, -38.43)
CIE-LCH	lch(32.03, 39.19, 281.24°)
OKLab	oklab(41.62% -0.0247 -0.11)
OKLCH	oklch(41.62% 0.113 257.3)
XYZ	xyz(7.5235, 7.1002, 24.2617)
Luminance	0.0710 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4B88 #885C1F

analogous

#1F7F88 #1F4B88 #271F88

triadic

#1F4B88 #881F4B #4B881F

tetradic

#1F4B88 #881F7F #885C1F #1F8827

square

#1F4B88 #881F7F #885C1F #1F8827

split-complementary

#1F4B88 #88271F #7F881F

monochromatic

#081424 #143056 #1F4B88 #2A66BA #4B85D6

Accessibility & contrast

On white

8.68

#1F4B88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#1F4B88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4B88

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4B88	#FFFFFF	#000000	##FFFFFF
##1F4B88	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C518A

Deuteranopia (green-blind)

#194787

Tritanopia (blue-blind)

#005963

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f4b88;
/* rgb */ color: rgb(31, 75, 136);
/* oklch */ color: oklch(41.6% 0.113 257.3);

Tailwind

colors: {
  custom: {
    50: '#6a7cab',
    500: '#1f4b88',
    950: '#000000',
  },
}

SCSS

$custom: #1f4b88;
$custom-light: #6a7cab;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4b88",
  "rgb": {
    "r": 31,
    "g": 75,
    "b": 136
  },
  "hsl": {
    "h": 214.857,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.41624,
    "c": 0.11277,
    "h": 257.3
  },
  "luminance": 0.07101
}

Semantic roles & 50–950 ramp

primary

#1F4B88

secondary

#B98A4A

accent

#A142E6

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1F4B88

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

Preview Lab → · Contrast checker → · Palette generator →