#51BB88
Closest named color: Green Blue (#01C08D). oklch(71.6% 0.124 159.8), rgb(81, 187, 136).
Aa
Black text reads best on this color (8.81:1).
About this color
#51BB88 is a medium-light, moderately saturated green. In OKLCH its lightness is 72%, its chroma 0.124 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Green Blue (#01C08D), ΔE 0.028 away. Black text reads best on it, at 8.81:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.124) |
| Temperature | in between |
| Nearest name | Green Blue (#01C08D) |
| Black text | 8.81:1 |
| White text | 2.38:1 |
Values
| HEX | #51BB88 |
| RGB | rgb(81, 187, 136) |
| HSL | hsl(151, 44%, 53%) |
| OKLCH | oklch(71.6% 0.124 159.8) |
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 #51BB88 | 2.38:1 | Fails | Lc -51.6 | Large or bold text, headings |
| Black text on #51BB88 | 8.81:1 | AAA | Lc 57.3 | Large or bold text, headings |
| #51BB88 text on white | 2.38:1 | Fails | Lc 46.7 | Large or bold text, headings |
| #51BB88 text on black | 8.81:1 | AAA | Lc -55.4 | 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
#F0F8F3
oklch(97.2% 0.011 158.8)
-
Step 100
100
#DEEFE5
oklch(93.7% 0.022 160.2)
-
Step 200
200
#C2E2CF
oklch(88.4% 0.043 159.4)
-
Step 300
300
#94D1AF
oklch(81% 0.079 159.6)
-
Step 400
400 (this color)
#51BB88
oklch(71.6% 0.124 159.8)
-
Step 500
500
#00A36A
oklch(63.1% 0.143 159.7)
-
Step 600
600
#008959
oklch(55.6% 0.126 160)
-
Step 700
700
#00734A
oklch(49% 0.111 160)
-
Step 800
800
#005F3C
oklch(42.8% 0.097 159.8)
-
Step 900
900
#004F31
oklch(37.7% 0.086 159.7)
-
Step 950
950
#002F1C
oklch(26.9% 0.06 160.5)
#51BB88 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) | #B9AE85 | 0.118 |
| Deuteranopia (no green cones) | #AAA48B | 0.113 |
| Tritanopia (no blue cones) | #28BAAD | 0.054 |
| Achromatopsia (no color) | #A8A8A8 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51BB88
#51BB88
oklch(71.6% 0.124 159.8)
- #D783BC
#D783BC
oklch(71.6% 0.125 339.9)
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 #51BB88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Blue #01C08D ΔE 0.028
- Greenblue #23C48B ΔE 0.030
- Greeny Blue #42B395 ΔE 0.036
- Dark Mint #48C072 ΔE 0.037
- Dark Seafoam #1FB57A ΔE 0.038
- Medium Sea Green #3CB371 ΔE 0.039
- Faded Green #7BB274 ΔE 0.041
- Boring Green #63B365 ΔE 0.042
Use #51BB88 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.