#121B57#121B57

#121B57 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.0% C 0.108 H 270.2°. Best body text is #FFFFFF at 15.91:1 contrast (WCAG AA passes).

Color values

HEX	#121B57
RGB	rgb(18, 27, 87)
HSL	hsl(232, 66%, 21%)
HSV	hsv(232, 79%, 34%)
CMYK	cmyk(79.3%, 69%, 0%, 65.9%)
CIE-LAB	lab(13.23, 19.89, -37.36)
CIE-LCH	lch(13.23, 42.33, 298.03°)
OKLab	oklab(25.99% 0.0005 -0.108)
OKLCH	oklch(25.99% 0.108 270.2)
XYZ	xyz(2.3611, 1.6003, 9.1994)
Luminance	0.0160 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121B57 #574E12

analogous

#123D57 #121B57 #2B1257

triadic

#121B57 #57121B #1B5712

tetradic

#121B57 #57123D #574E12 #12572B

square

#121B57 #57123D #574E12 #12572B

split-complementary

#121B57 #572B12 #3D5712

monochromatic

#050819 #080B24 #121B57 #1C2B8A #273ABC

Accessibility & contrast

On white

15.91

#121B57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#121B57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121B57

15.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121B57	#FFFFFF	#000000	##FFFFFF
##121B57	1.00	15.91	1.32	15.91
#FFFFFF	15.91	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002559

Deuteranopia (green-blind)

#001F56

Tritanopia (blue-blind)

#002B36

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #121b57;
/* rgb */ color: rgb(18, 27, 87);
/* oklch */ color: oklch(26.0% 0.108 270.2);

Tailwind

colors: {
  custom: {
    50: '#5c5787',
    500: '#121b57',
    950: '#000000',
  },
}

SCSS

$custom: #121b57;
$custom-light: #5c5787;
$custom-dark: #000000;

JSON

{
  "hex": "#121b57",
  "rgb": {
    "r": 18,
    "g": 27,
    "b": 87
  },
  "hsl": {
    "h": 232.174,
    "s": 65.714,
    "l": 20.588
  },
  "oklch": {
    "l": 0.25989,
    "c": 0.10797,
    "h": 270.2
  },
  "luminance": 0.01601
}

Semantic roles & 50–950 ramp

primary

#121B57

secondary

#908435

accent

#D33FE9

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #121B57

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

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