#2127A8#2127A8

#2127A8 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.7% C 0.198 H 270.1°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#2127A8
RGB	rgb(33, 39, 168)
HSL	hsl(237, 67%, 39%)
HSV	hsv(237, 80%, 66%)
CMYK	cmyk(80.4%, 76.8%, 0%, 34.1%)
CIE-LAB	lab(25.57, 43.72, -68.51)
CIE-LCH	lch(25.57, 81.27, 302.54°)
OKLab	oklab(37.68% 0.0002 -0.1984)
OKLCH	oklch(37.68% 0.198 270.1)
XYZ	xyz(8.4182, 4.6006, 37.4825)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2127A8 #A8A221

analogous

#216BA8 #2127A8 #5E21A8

triadic

#2127A8 #A82127 #27A821

tetradic

#2127A8 #A8216B #A8A221 #21A85E

square

#2127A8 #A8216B #A8A221 #21A85E

split-complementary

#2127A8 #A85E21 #6BA821

monochromatic

#0D0F42 #171B75 #2127A8 #3037D6 #6369E0

Accessibility & contrast

On white

10.94

#2127A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#2127A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2127A8

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2127A8	#FFFFFF	#000000	##FFFFFF
##2127A8	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043AC

Deuteranopia (green-blind)

#0036A6

Tritanopia (blue-blind)

#004E66

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2127a8;
/* rgb */ color: rgb(33, 39, 168);
/* oklch */ color: oklch(37.7% 0.198 270.1);

Tailwind

colors: {
  custom: {
    50: '#7663c3',
    500: '#2127a8',
    950: '#000000',
  },
}

SCSS

$custom: #2127a8;
$custom-light: #7663c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2127a8",
  "rgb": {
    "r": 33,
    "g": 39,
    "b": 168
  },
  "hsl": {
    "h": 237.333,
    "s": 67.164,
    "l": 39.412
  },
  "oklch": {
    "l": 0.37684,
    "c": 0.19843,
    "h": 270.1
  },
  "luminance": 0.04602
}

Semantic roles & 50–950 ramp

primary

#2127A8

secondary

#C5C15F

accent

#E23EEA

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0513

muted

#7C7A82

Preview Lab

Preview with #2127A8

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

Preview Lab → · Contrast checker → · Palette generator →