#213F7B#213F7B

#213F7B is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.9% C 0.108 H 262.5°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#213F7B
RGB	rgb(33, 63, 123)
HSL	hsl(220, 58%, 31%)
HSV	hsv(220, 73%, 48%)
CMYK	cmyk(73.2%, 48.8%, 0%, 51.8%)
CIE-LAB	lab(27.59, 10.94, -37.46)
CIE-LCH	lch(27.59, 39.03, 286.28°)
OKLab	oklab(37.95% -0.0142 -0.1074)
OKLCH	oklch(37.95% 0.108 262.5)
XYZ	xyz(5.9786, 5.3078, 19.4445)
Luminance	0.0531 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#213F7B #7B5D21

analogous

#216C7B #213F7B #30217B

triadic

#213F7B #7B213F #3F7B21

tetradic

#213F7B #7B216C #7B5D21 #217B30

square

#213F7B #7B216C #7B5D21 #217B30

split-complementary

#213F7B #7B3021 #6C7B21

monochromatic

#070E1A #14264B #213F7B #2E58AB #4875CE

Accessibility & contrast

On white

10.19

#213F7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#213F7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #213F7B

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##213F7B	#FFFFFF	#000000	##FFFFFF
##213F7B	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F467D

Deuteranopia (green-blind)

#0B3D7A

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #213f7b;
/* rgb */ color: rgb(33, 63, 123);
/* oklch */ color: oklch(37.9% 0.108 262.5);

Tailwind

colors: {
  custom: {
    50: '#6973a2',
    500: '#213f7b',
    950: '#000000',
  },
}

SCSS

$custom: #213f7b;
$custom-light: #6973a2;
$custom-dark: #000000;

JSON

{
  "hex": "#213f7b",
  "rgb": {
    "r": 33,
    "g": 63,
    "b": 123
  },
  "hsl": {
    "h": 220,
    "s": 57.692,
    "l": 30.588
  },
  "oklch": {
    "l": 0.37946,
    "c": 0.10831,
    "h": 262.5
  },
  "luminance": 0.05308
}

Semantic roles & 50–950 ramp

primary

#213F7B

secondary

#AE8D4A

accent

#AE47E1

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #213F7B

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

Preview Lab → · Contrast checker → · Palette generator →