#21387D#21387D

#21387D is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.5% C 0.121 H 266.5°. Best body text is #FFFFFF at 10.90:1 contrast (WCAG AA passes).

Color values

HEX	#21387D
RGB	rgb(33, 56, 125)
HSL	hsl(225, 58%, 31%)
HSV	hsv(225, 74%, 49%)
CMYK	cmyk(73.6%, 55.2%, 0%, 51%)
CIE-LAB	lab(25.66, 16.62, -41.84)
CIE-LCH	lch(25.66, 45.03, 291.67°)
OKLab	oklab(36.52% -0.0074 -0.1204)
OKLCH	oklch(36.52% 0.121 266.5)
XYZ	xyz(5.7418, 4.6318, 19.9895)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21387D #7D6621

analogous

#21667D #21387D #38217D

triadic

#21387D #7D2138 #387D21

tetradic

#21387D #7D2166 #7D6621 #217D38

square

#21387D #7D2166 #7D6621 #217D38

split-complementary

#21387D #7D3821 #667D21

monochromatic

#070D1C #14224D #21387D #2E4EAD #496BCF

Accessibility & contrast

On white

10.90

#21387D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#21387D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21387D

10.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21387D	#FFFFFF	#000000	##FFFFFF
##21387D	1.00	10.90	1.93	10.90
#FFFFFF	10.90	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06417F

Deuteranopia (green-blind)

#00397C

Tritanopia (blue-blind)

#004954

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #21387d;
/* rgb */ color: rgb(33, 56, 125);
/* oklch */ color: oklch(36.5% 0.121 266.5);

Tailwind

colors: {
  custom: {
    50: '#696ea3',
    500: '#21387d',
    950: '#000000',
  },
}

SCSS

$custom: #21387d;
$custom-light: #696ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#21387d",
  "rgb": {
    "r": 33,
    "g": 56,
    "b": 125
  },
  "hsl": {
    "h": 225,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.36518,
    "c": 0.12061,
    "h": 266.5
  },
  "luminance": 0.04632
}

Semantic roles & 50–950 ramp

primary

#21387D

secondary

#B0964A

accent

#BB46E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #21387D

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

Preview Lab → · Contrast checker → · Palette generator →