#21507B#21507B

#21507B is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.1% C 0.088 H 249.0°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#21507B
RGB	rgb(33, 80, 123)
HSL	hsl(209, 58%, 31%)
HSV	hsv(209, 73%, 48%)
CMYK	cmyk(73.2%, 35%, 0%, 51.8%)
CIE-LAB	lab(32.90, -0.49, -29.02)
CIE-LCH	lch(32.90, 29.02, 269.04°)
OKLab	oklab(42.07% -0.0316 -0.0823)
OKLCH	oklch(42.07% 0.088 249)
XYZ	xyz(7.0697, 7.4899, 19.8082)
Luminance	0.0749 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21507B #7B4C21

analogous

#217B79 #21507B #21237B

triadic

#21507B #7B2150 #507B21

tetradic

#21507B #79217B #7B4C21 #237B21

square

#21507B #79217B #7B4C21 #237B21

split-complementary

#21507B #7B2123 #7B7921

monochromatic

#07111A #14314B #21507B #2E6FAB #488ECE

Accessibility & contrast

On white

8.41

#21507B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#21507B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21507B

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21507B	#FFFFFF	#000000	##FFFFFF
##21507B	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D527D

Deuteranopia (green-blind)

#304A7A

Tritanopia (blue-blind)

#005A60

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #21507b;
/* rgb */ color: rgb(33, 80, 123);
/* oklch */ color: oklch(42.1% 0.088 249.0);

Tailwind

colors: {
  custom: {
    50: '#6880a1',
    500: '#21507b',
    950: '#000000',
  },
}

SCSS

$custom: #21507b;
$custom-light: #6880a1;
$custom-dark: #000000;

JSON

{
  "hex": "#21507b",
  "rgb": {
    "r": 33,
    "g": 80,
    "b": 123
  },
  "hsl": {
    "h": 208.667,
    "s": 57.692,
    "l": 30.588
  },
  "oklch": {
    "l": 0.42067,
    "c": 0.08819,
    "h": 249
  },
  "luminance": 0.07491
}

Semantic roles & 50–950 ramp

primary

#21507B

secondary

#AE7A4A

accent

#9047E1

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#070A0F

muted

#7A7C7E

Preview Lab

Preview with #21507B

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

Preview Lab → · Contrast checker → · Palette generator →