#2123A8#2123A8

#2123A8 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.1% C 0.202 H 270.4°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#2123A8
RGB	rgb(33, 35, 168)
HSL	hsl(239, 67%, 39%)
HSV	hsv(239, 80%, 66%)
CMYK	cmyk(80.4%, 79.2%, 0%, 34.1%)
CIE-LAB	lab(24.80, 45.90, -69.77)
CIE-LCH	lch(24.80, 83.52, 303.34°)
OKLab	oklab(37.15% 0.0014 -0.202)
OKLCH	oklch(37.15% 0.202 270.4)
XYZ	xyz(8.2937, 4.3516, 37.4410)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2123A8 #A8A621

analogous

#2167A8 #2123A8 #6321A8

triadic

#2123A8 #A82123 #23A821

tetradic

#2123A8 #A82167 #A8A621 #21A863

square

#2123A8 #A82167 #A8A621 #21A863

split-complementary

#2123A8 #A86321 #67A821

monochromatic

#0D0E42 #171875 #2123A8 #3032D6 #6365E0

Accessibility & contrast

On white

11.23

#2123A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#2123A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2123A8

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2123A8	#FFFFFF	#000000	##FFFFFF
##2123A8	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042AC

Deuteranopia (green-blind)

#0034A6

Tritanopia (blue-blind)

#004C65

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #2123a8;
/* rgb */ color: rgb(33, 35, 168);
/* oklch */ color: oklch(37.1% 0.202 270.4);

Tailwind

colors: {
  custom: {
    50: '#7661c3',
    500: '#2123a8',
    950: '#000000',
  },
}

SCSS

$custom: #2123a8;
$custom-light: #7661c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2123a8",
  "rgb": {
    "r": 33,
    "g": 35,
    "b": 168
  },
  "hsl": {
    "h": 239.111,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.37146,
    "c": 0.20205,
    "h": 270.4
  },
  "luminance": 0.04353
}

Semantic roles & 50–950 ramp

primary

#2123A8

secondary

#C5C45F

accent

#E83EEA

background

#F8F5FC

surface

#EFEAF8

border

#CAC6D1

text

#0A0513

muted

#7C7982

Preview Lab

Preview with #2123A8

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

Preview Lab → · Contrast checker → · Palette generator →