#178669
Closest named color: Sea Green (#2E8B57). oklch(55.4% 0.104 169.7), rgb(23, 134, 105).
Aa
Black text reads best on this color (4.65:1).
About this color
#178669 is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.104 and its hue 170°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.035 away. Black text reads best on it, at 4.65:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.65:1 |
| White text | 4.51:1 |
Values
| HEX | #178669 |
| RGB | rgb(23, 134, 105) |
| HSL | hsl(164, 71%, 31%) |
| OKLCH | oklch(55.4% 0.104 169.7) |
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 #178669 | 4.51:1 | AA | Lc -76.4 | Fine for body text |
| Black text on #178669 | 4.65:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #178669 text on white | 4.51:1 | AA | Lc 70.9 | Content text, not long reading |
| #178669 text on black | 4.65:1 | AA | Lc -30.8 | Non-text elements, placeholder text |
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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#C9DFD6
oklch(88.5% 0.026 169.2)
-
Step 300
300
#A4CBBC
oklch(81% 0.046 169.7)
-
Step 400
400
#6FB099
oklch(70.7% 0.075 169.7)
-
Step 500
500
#439C80
oklch(63.1% 0.096 169.7)
-
Step 600
600 (this color)
#178669
oklch(55.4% 0.104 169.7)
-
Step 700
700
#027258
oklch(49.1% 0.097 169.8)
-
Step 800
800
#0D5D48
oklch(42.8% 0.08 169.7)
-
Step 900
900
#174C3C
oklch(37.7% 0.062 169.5)
-
Step 950
950
#0F2D23
oklch(27.1% 0.041 168.7)
#178669 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) | #827C68 | 0.106 |
| Deuteranopia (no green cones) | #74726B | 0.102 |
| Tritanopia (no blue cones) | #00877E | 0.031 |
| Achromatopsia (no color) | #767676 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #178669
#178669
oklch(55.4% 0.104 169.7)
- #A0587C
#A0587C
oklch(55.5% 0.104 349.7)
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 #178669, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.035
- Viridian #1E9167 ΔE 0.036
- Teal #008080 ΔE 0.046
- Dark Cyan #008B8B ΔE 0.050
- Dark Sage #598556 ΔE 0.051
- Bluegreen #017A79 ΔE 0.052
- Jungle Green #048243 ΔE 0.053
- Dusty Teal #4C9085 ΔE 0.063
Use #178669 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.