#12583B
Closest named color: Spruce (#0A5F38). oklch(41% 0.083 160.7), rgb(18, 88, 59).
Aa
White text reads best on this color (8.45:1).
About this color
#12583B is a dark, moderately saturated green. In OKLCH its lightness is 41%, its chroma 0.083 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.025 away. White text reads best on it, at 8.45:1.
| Hue family | Greens |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.48:1 |
| White text | 8.45:1 |
Values
| HEX | #12583B |
| RGB | rgb(18, 88, 59) |
| HSL | hsl(155, 66%, 21%) |
| OKLCH | oklch(41% 0.083 160.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #12583B | 8.45:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #12583B | 2.48:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #12583B text on white | 8.45:1 | AAA | Lc 88.8 | Fine for body text |
| #12583B text on black | 2.48:1 | Fails | Lc -13.4 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CADFD3
oklch(88.5% 0.028 160.8)
-
Step 300
300
#A6CBB6
oklch(80.9% 0.049 160.2)
-
Step 400
400
#74B091
oklch(70.7% 0.078 161)
-
Step 500
500
#4B9C75
oklch(63.1% 0.1 160.6)
-
Step 600
600
#28865E
oklch(55.5% 0.107 161)
-
Step 700
700
#19724D
oklch(49.2% 0.101 160.4)
-
Step 800
800 (this color)
#12583B
oklch(41% 0.083 160.7)
-
Step 900
900
#1C4C36
oklch(37.7% 0.065 160.9)
-
Step 950
950
#122D20
oklch(27.1% 0.041 160.9)
#12583B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #575139 | 0.079 |
| Deuteranopia (no green cones) | #4E4A3D | 0.078 |
| Tritanopia (no blue cones) | #005850 | 0.034 |
| Achromatopsia (no color) | #4D4D4D | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12583B
#12583B
oklch(41% 0.083 160.7)
- #683758
#683758
oklch(41% 0.083 340.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #12583B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.025
- Pine #2B5D34 ΔE 0.029
- Dark Blue Green #005249 ΔE 0.036
- Dark Green Blue #1F6357 ΔE 0.052
- Navy Green #35530A ΔE 0.052
- Deep Green #02590F ΔE 0.055
- Deep Teal #00555A ΔE 0.055
- Forest #0B5509 ΔE 0.056
Use #12583B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.