#2138A4#2138A4

#2138A4 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.0% C 0.175 H 267.8°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#2138A4
RGB	rgb(33, 56, 164)
HSL	hsl(229, 66%, 39%)
HSV	hsv(229, 80%, 64%)
CMYK	cmyk(79.9%, 65.9%, 0%, 35.7%)
CIE-LAB	lab(28.98, 31.79, -60.46)
CIE-LCH	lch(28.98, 68.31, 297.74°)
OKLab	oklab(40.03% -0.0068 -0.175)
OKLCH	oklch(40.03% 0.175 267.8)
XYZ	xyz(8.7399, 5.8310, 35.7796)
Luminance	0.0583 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2138A4 #A48D21

analogous

#2179A4 #2138A4 #4C21A4

triadic

#2138A4 #A42138 #38A421

tetradic

#2138A4 #A42179 #A48D21 #21A44C

square

#2138A4 #A42179 #A48D21 #21A44C

split-complementary

#2138A4 #A44C21 #79A421

monochromatic

#0C153E #172771 #2138A4 #2D4BD5 #6077DF

Accessibility & contrast

On white

9.69

#2138A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#2138A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2138A4

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2138A4	#FFFFFF	#000000	##FFFFFF
##2138A4	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA7

Deuteranopia (green-blind)

#003EA2

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2138a4;
/* rgb */ color: rgb(33, 56, 164);
/* oklch */ color: oklch(40.0% 0.175 267.8);

Tailwind

colors: {
  custom: {
    50: '#736ec0',
    500: '#2138a4',
    950: '#000000',
  },
}

SCSS

$custom: #2138a4;
$custom-light: #736ec0;
$custom-dark: #000000;

JSON

{
  "hex": "#2138a4",
  "rgb": {
    "r": 33,
    "g": 56,
    "b": 164
  },
  "hsl": {
    "h": 229.466,
    "s": 66.497,
    "l": 38.627
  },
  "oklch": {
    "l": 0.40026,
    "c": 0.17514,
    "h": 267.8
  },
  "luminance": 0.05832
}

Semantic roles & 50–950 ramp

primary

#2138A4

secondary

#C4B25D

accent

#CB3EE9

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2138A4

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

Preview Lab → · Contrast checker → · Palette generator →