#437E66
Closest named color: Dark Sage (#598556). oklch(54.6% 0.073 165.5), rgb(67, 126, 102).
Aa
White text reads best on this color (4.75:1).
About this color
#437E66 is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.073 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.042 away. White text reads best on it, at 4.75:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.41:1 |
| White text | 4.75:1 |
Values
| HEX | #437E66 |
| RGB | rgb(67, 126, 102) |
| HSL | hsl(156, 31%, 38%) |
| OKLCH | oklch(54.6% 0.073 165.5) |
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 #437E66 | 4.75:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #437E66 | 4.41:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #437E66 text on white | 4.75:1 | AA | Lc 72.9 | Content text, not long reading |
| #437E66 text on black | 4.41:1 | AA large text | Lc -28.8 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CFDDD6
oklch(88.5% 0.018 164.6)
-
Step 300
300
#AEC8BB
oklch(81% 0.033 164)
-
Step 400
400
#82AB99
oklch(70.6% 0.052 166.2)
-
Step 500
500
#619780
oklch(63.2% 0.067 165.6)
-
Step 600
600 (this color)
#437E66
oklch(54.6% 0.073 165.5)
-
Step 700
700
#376D57
oklch(49.1% 0.068 165.2)
-
Step 800
800
#2E5947
oklch(42.7% 0.057 164.8)
-
Step 900
900
#2A493C
oklch(37.7% 0.044 165.6)
-
Step 950
950
#192B23
oklch(27% 0.028 164.8)
#437E66 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) | #7C7765 | 0.073 |
| Deuteranopia (no green cones) | #737068 | 0.071 |
| Tritanopia (no blue cones) | #317E77 | 0.028 |
| Achromatopsia (no color) | #737373 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #437E66
#437E66
oklch(54.6% 0.073 165.5)
- #8F5F7A
#8F5F7A
oklch(54.6% 0.073 345)
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 #437E66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.042
- Teal #008080 ΔE 0.046
- Bluegreen #017A79 ΔE 0.048
- Sea Green #2E8B57 ΔE 0.054
- Deep Aqua #08787F ΔE 0.057
- Dark Aquamarine #017371 ΔE 0.059
- Dark Cyan #008B8B ΔE 0.059
- Military Green #667C3E ΔE 0.059
Use #437E66 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.