#21658B#21658B

#21658B is a mid, moderate cyan. Relative luminance 0.115; OKLCH L 48.3% C 0.090 H 237.7°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#21658B
RGB	rgb(33, 101, 139)
HSL	hsl(202, 62%, 34%)
HSV	hsv(202, 76%, 55%)
CMYK	cmyk(76.3%, 27.3%, 0%, 45.5%)
CIE-LAB	lab(40.40, -7.54, -27.02)
CIE-LCH	lch(40.40, 28.05, 254.41°)
OKLab	oklab(48.26% -0.0483 -0.0762)
OKLCH	oklch(48.26% 0.09 237.7)
XYZ	xyz(9.9392, 11.4936, 26.1157)
Luminance	0.1149 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21658B #8B4721

analogous

#218B7C #21658B #21308B

triadic

#21658B #8B2165 #658B21

tetradic

#21658B #7C218B #8B4721 #308B21

square

#21658B #7C218B #8B4721 #308B21

split-complementary

#21658B #8B2130 #8B7C21

monochromatic

#0A1D28 #15415A #21658B #2D89BC #51A6D6

Accessibility & contrast

On white

6.37

#21658B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#21658B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21658B

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21658B	#FFFFFF	#000000	##FFFFFF
##21658B	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#53658D

Deuteranopia (green-blind)

#455B8A

Tritanopia (blue-blind)

#006F72

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #21658b;
/* rgb */ color: rgb(33, 101, 139);
/* oklch */ color: oklch(48.3% 0.090 237.7);

Tailwind

colors: {
  custom: {
    50: '#6c90ad',
    500: '#21658b',
    950: '#000000',
  },
}

SCSS

$custom: #21658b;
$custom-light: #6c90ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21658b",
  "rgb": {
    "r": 33,
    "g": 101,
    "b": 139
  },
  "hsl": {
    "h": 201.509,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.48264,
    "c": 0.09024,
    "h": 237.7
  },
  "luminance": 0.11495
}

Semantic roles & 50–950 ramp

primary

#21658B

secondary

#B9754F

accent

#7D43E5

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #21658B

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

Preview Lab → · Contrast checker → · Palette generator →