#31604E
Closest named color: Dark Green Blue (#1F6357). oklch(45% 0.06 166.8), rgb(49, 96, 78).
Aa
White text reads best on this color (7.20:1).
About this color
#31604E is a dark, muted green. In OKLCH its lightness is 45%, its chroma 0.060 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.018 away. White text reads best on it, at 7.20:1.
| Hue family | Greens |
| Lightness | dark (45%) |
| Chroma | muted (0.060) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.91:1 |
| White text | 7.20:1 |
Values
| HEX | #31604E |
| RGB | rgb(49, 96, 78) |
| HSL | hsl(157, 32%, 28%) |
| OKLCH | oklch(45% 0.06 166.8) |
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 #31604E | 7.20:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #31604E | 2.91:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #31604E text on white | 7.20:1 | AAA | Lc 84.9 | Fine for body text |
| #31604E text on black | 2.91:1 | Fails | Lc -17.1 | Dividers and decoration only |
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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CEDDD6
oklch(88.4% 0.019 166.3)
-
Step 300
300
#ACC8BC
oklch(80.9% 0.035 167.7)
-
Step 400
400
#7FAC99
oklch(70.6% 0.056 166.9)
-
Step 500
500
#5D9880
oklch(63.2% 0.072 166.4)
-
Step 600
600
#418269
oklch(55.6% 0.078 166.3)
-
Step 700
700
#326E58
oklch(49.1% 0.073 166.9)
-
Step 800
800 (this color)
#31604E
oklch(45% 0.06 166.8)
-
Step 900
900
#274A3C
oklch(37.8% 0.048 166.2)
-
Step 950
950
#182B23
oklch(27% 0.029 165.8)
#31604E 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) | #5E5A4D | 0.061 |
| Deuteranopia (no green cones) | #57554F | 0.058 |
| Tritanopia (no blue cones) | #22605B | 0.023 |
| Achromatopsia (no color) | #575757 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31604E
#31604E
oklch(45% 0.06 166.8)
- #6E475C
#6E475C
oklch(44.9% 0.061 346.3)
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 #31604E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.018
- Pine #2B5D34 ΔE 0.039
- Spruce #0A5F38 ΔE 0.046
- Dark Aqua #05696B ΔE 0.047
- Petrol #005F6A ΔE 0.051
- Deep Teal #00555A ΔE 0.057
- Dark Slate Gray #2F4F4F ΔE 0.057
- Dark Blue Green #005249 ΔE 0.060
Use #31604E 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.