#337B5B
Closest named color: Bluegreen (#017A79). oklch(52.8% 0.089 161.8), rgb(51, 123, 91).
Aa
White text reads best on this color (5.09:1).
About this color
#337B5B is a medium-dark, moderately saturated green. In OKLCH its lightness is 53%, its chroma 0.089 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.049 away. White text reads best on it, at 5.09:1.
| Hue family | Greens |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.12:1 |
| White text | 5.09:1 |
Values
| HEX | #337B5B |
| RGB | rgb(51, 123, 91) |
| HSL | hsl(153, 41%, 34%) |
| OKLCH | oklch(52.8% 0.089 161.8) |
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 #337B5B | 5.09:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #337B5B | 4.12:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #337B5B text on white | 5.09:1 | AA | Lc 74.9 | Content text, not long reading |
| #337B5B text on black | 4.12:1 | AA large text | Lc -26.8 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3ECE7
oklch(93.5% 0.012 162)
-
Step 200
200
#CDDED5
oklch(88.5% 0.022 163)
-
Step 300
300
#ABC9B9
oklch(80.9% 0.039 162.2)
-
Step 400
400
#7DAD94
oklch(70.6% 0.063 161.5)
-
Step 500
500
#59997A
oklch(63.1% 0.082 161.8)
-
Step 600
600 (this color)
#337B5B
oklch(52.8% 0.089 161.8)
-
Step 700
700
#2D6F52
oklch(49% 0.083 162)
-
Step 800
800
#275B43
oklch(42.8% 0.069 161.4)
-
Step 900
900
#254A39
oklch(37.6% 0.052 162.6)
-
Step 950
950
#162C21
oklch(27.1% 0.035 161)
#337B5B 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) | #797359 | 0.085 |
| Deuteranopia (no green cones) | #6F6B5D | 0.083 |
| Tritanopia (no blue cones) | #157B72 | 0.036 |
| Achromatopsia (no color) | #6E6E6E | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337B5B
#337B5B
oklch(52.8% 0.089 161.8)
- #8E567A
#8E567A
oklch(52.8% 0.089 341.6)
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 #337B5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.049
- Jungle Green #048243 ΔE 0.051
- Sea Green #2E8B57 ΔE 0.052
- Dark Sage #598556 ΔE 0.053
- Dark Aquamarine #017371 ΔE 0.053
- Teal #008080 ΔE 0.054
- Deep Turquoise #017374 ΔE 0.057
- Deep Aqua #08787F ΔE 0.061
Use #337B5B 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.