#2159BB#2159BB

#2159BB is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.6% C 0.166 H 260.8°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#2159BB
RGB	rgb(33, 89, 187)
HSL	hsl(218, 70%, 43%)
HSV	hsv(218, 82%, 73%)
CMYK	cmyk(82.4%, 52.4%, 0%, 26.7%)
CIE-LAB	lab(39.67, 18.74, -56.70)
CIE-LCH	lch(39.67, 59.71, 288.29°)
OKLab	oklab(48.62% -0.0266 -0.1635)
OKLCH	oklch(48.62% 0.166 260.8)
XYZ	xyz(13.1660, 11.0543, 48.4439)
Luminance	0.1106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2159BB #BB8321

analogous

#21A6BB #2159BB #3621BB

triadic

#2159BB #BB2159 #59BB21

tetradic

#2159BB #BB21A6 #BB8321 #21BB36

square

#2159BB #BB21A6 #BB8321 #21BB36

split-complementary

#2159BB #BB3621 #A6BB21

monochromatic

#0F2753 #184087 #2159BB #3D77DD #719BE6

Accessibility & contrast

On white

6.54

#2159BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#2159BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2159BB

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2159BB	#FFFFFF	#000000	##FFFFFF
##2159BB	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1165BE

Deuteranopia (green-blind)

#0057B9

Tritanopia (blue-blind)

#007181

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2159bb;
/* rgb */ color: rgb(33, 89, 187);
/* oklch */ color: oklch(48.6% 0.166 260.8);

Tailwind

colors: {
  custom: {
    50: '#7787d0',
    500: '#2159bb',
    950: '#000000',
  },
}

SCSS

$custom: #2159bb;
$custom-light: #7787d0;
$custom-dark: #000000;

JSON

{
  "hex": "#2159bb",
  "rgb": {
    "r": 33,
    "g": 89,
    "b": 187
  },
  "hsl": {
    "h": 218.182,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.48621,
    "c": 0.1656,
    "h": 260.8
  },
  "luminance": 0.11056
}

Semantic roles & 50–950 ramp

primary

#2159BB

secondary

#CCA96B

accent

#AC3BED

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0B14

muted

#7C7C82

Preview Lab

Preview with #2159BB

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

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