#213B9B#213B9B

#213B9B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.8% C 0.159 H 267.0°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#213B9B
RGB	rgb(33, 59, 155)
HSL	hsl(227, 65%, 37%)
HSV	hsv(227, 79%, 61%)
CMYK	cmyk(78.7%, 61.9%, 0%, 39.2%)
CIE-LAB	lab(28.95, 26.35, -55.06)
CIE-LCH	lch(28.95, 61.04, 295.57°)
OKLab	oklab(39.75% -0.0084 -0.1592)
OKLCH	oklch(39.75% 0.159 267)
XYZ	xyz(8.1055, 5.8169, 31.6996)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#213B9B #9B8121

analogous

#21789B #213B9B #44219B

triadic

#213B9B #9B213B #3B9B21

tetradic

#213B9B #9B2178 #9B8121 #219B44

square

#213B9B #9B2178 #9B8121 #219B44

split-complementary

#213B9B #9B4421 #789B21

monochromatic

#0C1536 #162869 #213B9B #2C4ECD #5A76DC

Accessibility & contrast

On white

9.71

#213B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#213B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #213B9B

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##213B9B	#FFFFFF	#000000	##FFFFFF
##213B9B	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9E

Deuteranopia (green-blind)

#003F99

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #213b9b;
/* rgb */ color: rgb(33, 59, 155);
/* oklch */ color: oklch(39.8% 0.159 267.0);

Tailwind

colors: {
  custom: {
    50: '#7170b9',
    500: '#213b9b',
    950: '#000000',
  },
}

SCSS

$custom: #213b9b;
$custom-light: #7170b9;
$custom-dark: #000000;

JSON

{
  "hex": "#213b9b",
  "rgb": {
    "r": 33,
    "g": 59,
    "b": 155
  },
  "hsl": {
    "h": 227.213,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.39751,
    "c": 0.15939,
    "h": 267
  },
  "luminance": 0.05818
}

Semantic roles & 50–950 ramp

primary

#213B9B

secondary

#C0AA58

accent

#C440E8

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #213B9B

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

Preview Lab → · Contrast checker → · Palette generator →