#1F4E37
Closest named color: Dark Blue Green (#005249). oklch(38.4% 0.065 159.7), rgb(31, 78, 55).
Aa
White text reads best on this color (9.53:1).
About this color
#1F4E37 is a dark, muted green. In OKLCH its lightness is 38%, its chroma 0.065 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.029 away. White text reads best on it, at 9.53:1.
| Hue family | Greens |
| Lightness | dark (38%) |
| Chroma | muted (0.065) |
| Temperature | in between |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #1F4E37 |
| RGB | rgb(31, 78, 55) |
| HSL | hsl(151, 43%, 21%) |
| OKLCH | oklch(38.4% 0.065 159.7) |
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 #1F4E37 | 9.53:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #1F4E37 | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #1F4E37 text on white | 9.53:1 | AAA | Lc 91.9 | Preferred for body text |
| #1F4E37 text on black | 2.20:1 | Fails | Lc -10.5 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#CBDFD3
oklch(88.5% 0.027 159.5)
-
Step 300
300
#A6CBB6
oklch(80.9% 0.049 160.2)
-
Step 400
400
#75B090
oklch(70.7% 0.078 159.9)
-
Step 500
500
#4C9C74
oklch(63.1% 0.1 159.8)
-
Step 600
600
#2A865C
oklch(55.5% 0.108 159.5)
-
Step 700
700
#1A724C
oklch(49.2% 0.102 159.7)
-
Step 800
800
#1A5D3E
oklch(42.8% 0.085 159.1)
-
Step 900
900 (this color)
#1F4E37
oklch(38.4% 0.065 159.7)
-
Step 950
950
#122D1F
oklch(27.1% 0.043 159.1)
#1F4E37 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) | #4D4836 | 0.062 |
| Deuteranopia (no green cones) | #464338 | 0.060 |
| Tritanopia (no blue cones) | #0E4E48 | 0.029 |
| Achromatopsia (no color) | #454545 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F4E37
#1F4E37
oklch(38.4% 0.065 159.7)
- #5A354F
#5A354F
oklch(38.4% 0.065 338.7)
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 #1F4E37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.029
- Evergreen #05472A ΔE 0.036
- Dark Teal #014D4E ΔE 0.041
- Pine Green #0A481E ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.045
- Pine #2B5D34 ΔE 0.055
- Deep Teal #00555A ΔE 0.055
- Spruce #0A5F38 ΔE 0.056
Use #1F4E37 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.