#337E51
Closest named color: Jungle Green (#048243). oklch(53.4% 0.103 154.4), rgb(51, 126, 81).
Aa
White text reads best on this color (4.94:1).
About this color
#337E51 is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.103 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jungle Green (#048243), ΔE 0.034 away. White text reads best on it, at 4.94:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Jungle Green (#048243) |
| Black text | 4.24:1 |
| White text | 4.94:1 |
Values
| HEX | #337E51 |
| RGB | rgb(51, 126, 81) |
| HSL | hsl(144, 42%, 35%) |
| OKLCH | oklch(53.4% 0.103 154.4) |
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 #337E51 | 4.94:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #337E51 | 4.24:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #337E51 text on white | 4.94:1 | AA | Lc 74.0 | Content text, not long reading |
| #337E51 text on black | 4.24:1 | AA large text | Lc -27.7 | 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 600.
-
Step 50
50
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE6
oklch(93.7% 0.014 155.6)
-
Step 200
200
#CDDED2
oklch(88.4% 0.024 155.1)
-
Step 300
300
#AACAB3
oklch(80.9% 0.047 154)
-
Step 400
400
#7CAF8C
oklch(70.8% 0.074 154.2)
-
Step 500
500
#589A6F
oklch(63% 0.094 154.2)
-
Step 600
600 (this color)
#337E51
oklch(53.4% 0.103 154.4)
-
Step 700
700
#2C7047
oklch(49% 0.096 154.2)
-
Step 800
800
#265C3B
oklch(42.8% 0.08 154.3)
-
Step 900
900
#244B32
oklch(37.6% 0.062 154.1)
-
Step 950
950
#162C1E
oklch(27% 0.039 154.9)
#337E51 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) | #7E744E | 0.092 |
| Deuteranopia (no green cones) | #736D54 | 0.089 |
| Tritanopia (no blue cones) | #1B7D72 | 0.050 |
| Achromatopsia (no color) | #707070 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337E51
#337E51
oklch(53.4% 0.103 154.4)
- #915585
#915585
oklch(53.5% 0.103 334.6)
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 #337E51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jungle Green #048243 ΔE 0.034
- Sea Green #2E8B57 ΔE 0.038
- Dark Sage #598556 ΔE 0.046
- Military Green #667C3E ΔE 0.054
- Viridian #1E9167 ΔE 0.056
- Muddy Green #657432 ΔE 0.058
- Tree Green #2A7E19 ΔE 0.062
- Dark Olive Green #556B2F ΔE 0.062
Use #337E51 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.