#313F01
Closest named color: Dark Olive (#373E02). oklch(34.3% 0.083 122.7), rgb(49, 63, 1).
Aa
White text reads best on this color (11.40:1).
About this color
#313F01 is a dark, moderately saturated brown. In OKLCH its lightness is 34%, its chroma 0.083 and its hue 123°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Olive (#373E02), ΔE 0.010 away. White text reads best on it, at 11.40:1.
| Hue family | Browns |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Dark Olive (#373E02) |
| Black text | 1.84:1 |
| White text | 11.40:1 |
Values
| HEX | #313F01 |
| RGB | rgb(49, 63, 1) |
| HSL | hsl(74, 97%, 13%) |
| OKLCH | oklch(34.3% 0.083 122.7) |
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 #313F01 | 11.40:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #313F01 | 1.84:1 | Fails | Lc 7.7 | Not readable |
| #313F01 text on white | 11.40:1 | AAA | Lc 96.1 | Preferred for body text |
| #313F01 text on black | 1.84:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F4F6F0
oklch(97% 0.008 121.6)
-
Step 100
100
#E7ECDF
oklch(93.6% 0.018 124)
-
Step 200
200
#D5DDC4
oklch(88.5% 0.035 121.6)
-
Step 300
300
#B9C89B
oklch(81% 0.063 122.8)
-
Step 400
400
#95AB63
oklch(70.7% 0.1 122.8)
-
Step 500
500
#7C9534
oklch(63% 0.126 122.4)
-
Step 600
600
#657F00
oklch(55.6% 0.136 122.8)
-
Step 700
700
#556B00
oklch(49.2% 0.12 122.6)
-
Step 800
800
#455700
oklch(42.6% 0.104 122.4)
-
Step 900
900 (this color)
#313F01
oklch(34.3% 0.083 122.7)
-
Step 950
950
#222A0A
oklch(26.9% 0.052 121.9)
#313F01 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) | #433A00 | 0.033 |
| Deuteranopia (no green cones) | #423A07 | 0.034 |
| Tritanopia (no blue cones) | #343B34 | 0.069 |
| Achromatopsia (no color) | #3A3A3A | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #313F01
#313F01
oklch(34.3% 0.083 122.7)
- #412C5C
#412C5C
oklch(34.2% 0.084 302.4)
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 #313F01, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Olive #373E02 ΔE 0.010
- Forrest Green #154406 ΔE 0.033
- Hunter Green #0B4008 ΔE 0.039
- Pine Green #0A481E ΔE 0.042
- Pakistan Green #283618 ΔE 0.044
- British Racing Green #05480D ΔE 0.044
- Racing Green #014600 ΔE 0.047
- Darkgreen #054907 ΔE 0.047
Use #313F01 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.