#53B178
Closest named color: Dark Seafoam Green (#3EAF76). oklch(68.8% 0.124 154.7), rgb(83, 177, 120).
Aa
Black text reads best on this color (7.92:1).
About this color
#53B178 is a medium-light, moderately saturated green. In OKLCH its lightness is 69%, its chroma 0.124 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam Green (#3EAF76), ΔE 0.017 away. Black text reads best on it, at 7.92:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.124) |
| Temperature | in between |
| Nearest name | Dark Seafoam Green (#3EAF76) |
| Black text | 7.92:1 |
| White text | 2.64:1 |
Values
| HEX | #53B178 |
| RGB | rgb(83, 177, 120) |
| HSL | hsl(144, 38%, 51%) |
| OKLCH | oklch(68.8% 0.124 154.7) |
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 #53B178 | 2.64:1 | Fails | Lc -56.5 | Large or bold text, headings |
| Black text on #53B178 | 7.92:1 | AAA | Lc 52.7 | Large or bold text, headings |
| #53B178 text on white | 2.64:1 | Fails | Lc 51.3 | Large or bold text, headings |
| #53B178 text on black | 7.92:1 | AAA | Lc -50.6 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F8F2
oklch(97.1% 0.012 153.7)
-
Step 100
100
#DFEFE3
oklch(93.7% 0.023 153.4)
-
Step 200
200
#C4E2CD
oklch(88.5% 0.043 154.9)
-
Step 300
300
#99D0AB
oklch(80.9% 0.077 154.9)
-
Step 400
400 (this color)
#53B178
oklch(68.8% 0.124 154.7)
-
Step 500
500
#00A45D
oklch(63.1% 0.157 154.8)
-
Step 600
600
#008A4D
oklch(55.6% 0.138 154.7)
-
Step 700
700
#007440
oklch(49.1% 0.122 154.8)
-
Step 800
800
#005F33
oklch(42.6% 0.106 154.6)
-
Step 900
900
#004F2A
oklch(37.6% 0.093 154.9)
-
Step 950
950
#022F17
oklch(26.9% 0.065 154.4)
#53B178 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) | #B1A574 | 0.110 |
| Deuteranopia (no green cones) | #A39B7C | 0.108 |
| Tritanopia (no blue cones) | #39AFA2 | 0.062 |
| Achromatopsia (no color) | #9F9F9F | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #53B178
#53B178
oklch(68.8% 0.124 154.7)
- #C97CB9
#C97CB9
oklch(68.7% 0.123 334.8)
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 #53B178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam Green #3EAF76 ΔE 0.017
- Medium Sea Green #3CB371 ΔE 0.021
- Algae #54AC68 ΔE 0.021
- Bluey Green #2BB179 ΔE 0.024
- Tea #65AB7C ΔE 0.025
- Dark Seafoam #1FB57A ΔE 0.027
- Boring Green #63B365 ΔE 0.028
- Seaweed Green #35AD6B ΔE 0.031
Use #53B178 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.