#1F450B#1F450B

#1F450B is a dark, moderate yellow-green. Relative luminance 0.046; OKLCH L 34.9% C 0.095 H 137.2°. Best body text is #FFFFFF at 10.97:1 contrast (WCAG AA passes).

Color values

HEX	#1F450B
RGB	rgb(31, 69, 11)
HSL	hsl(99, 73%, 16%)
HSV	hsv(99, 84%, 27%)
CMYK	cmyk(55.1%, 0%, 84.1%, 72.9%)
CIE-LAB	lab(25.48, -25.22, 28.89)
CIE-LCH	lch(25.48, 38.35, 131.12°)
OKLab	oklab(34.92% -0.0699 0.0647)
OKLCH	oklch(34.92% 0.095 137.2)
XYZ	xyz(2.7535, 4.5715, 1.0538)
Luminance	0.0457 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Forrest Green

#154406

ΔE00 1.52

Hunter Green (survey)

#0B4008

ΔE00 2.96

Forest Green (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F450B #310B45

analogous

#3C450B #1F450B #0B4514

triadic

#1F450B #0B1F45 #450B1F

tetradic

#1F450B #0B3C45 #310B45 #45140B

square

#1F450B #0B3C45 #310B45 #45140B

split-complementary

#1F450B #140B45 #450B3C

monochromatic

#0C1A04 #0C1A04 #1F450B #377A13 #4EAF1C

Accessibility & contrast

On white

10.97

#1F450B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1F450B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F450B

10.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F450B	#FFFFFF	#000000	##FFFFFF
##1F450B	1.00	10.97	1.91	10.97
#FFFFFF	10.97	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#483E02

Deuteranopia (green-blind)

#433B11

Tritanopia (blue-blind)

#1D423A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f450b;
/* rgb */ color: rgb(31, 69, 11);
/* oklch */ color: oklch(34.9% 0.095 137.2);

Tailwind

colors: {
  custom: {
    50: '#5f794f',
    500: '#1f450b',
    950: '#000000',
  },
}

SCSS

$custom: #1f450b;
$custom-light: #5f794f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f450b",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 11
  },
  "hsl": {
    "h": 99.31,
    "s": 72.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.34917,
    "c": 0.09531,
    "h": 137.2
  },
  "luminance": 0.04572
}

Semantic roles & 50–950 ramp

primary

#1F450B

secondary

#632A81

accent

#39EFB0

background

#F5F7F4

surface

#EAEDE7

border

#C6C8C3

text

#050902

muted

#797B78

Preview Lab

Preview with #1F450B

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

Preview Lab → · Contrast checker → · Palette generator →