#5BB18E
Closest named color: Greeny Blue (#42B395). oklch(69.7% 0.099 165), rgb(91, 177, 142).
Aa
Black text reads best on this color (8.12:1).
About this color
#5BB18E is a medium-light, moderately saturated green. In OKLCH its lightness is 70%, its chroma 0.099 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.018 away. Black text reads best on it, at 8.12:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.12:1 |
| White text | 2.58:1 |
Values
| HEX | #5BB18E |
| RGB | rgb(91, 177, 142) |
| HSL | hsl(156, 36%, 53%) |
| OKLCH | oklch(69.7% 0.099 165) |
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 #5BB18E | 2.58:1 | Fails | Lc -55.5 | Large or bold text, headings |
| Black text on #5BB18E | 8.12:1 | AAA | Lc 53.7 | Large or bold text, headings |
| #5BB18E text on white | 2.58:1 | Fails | Lc 50.3 | Large or bold text, headings |
| #5BB18E text on black | 8.12:1 | AAA | Lc -51.6 | 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
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#DFEEE7
oklch(93.6% 0.018 166.4)
-
Step 200
200
#C5E1D3
oklch(88.5% 0.035 164.1)
-
Step 300
300
#9BCEB7
oklch(80.9% 0.062 165.4)
-
Step 400
400 (this color)
#5BB18E
oklch(69.7% 0.099 165)
-
Step 500
500
#1AA176
oklch(63.1% 0.127 165)
-
Step 600
600
#008862
oklch(55.5% 0.117 165.2)
-
Step 700
700
#007352
oklch(49.2% 0.104 164.9)
-
Step 800
800
#005E42
oklch(42.7% 0.09 164.7)
-
Step 900
900
#004E37
oklch(37.6% 0.079 165.5)
-
Step 950
950
#052E20
oklch(26.9% 0.052 165.4)
#5BB18E 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) | #AEA78C | 0.098 |
| Deuteranopia (no green cones) | #A19D90 | 0.095 |
| Tritanopia (no blue cones) | #3FB1A7 | 0.038 |
| Achromatopsia (no color) | #A1A1A1 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB18E
#5BB18E
oklch(69.7% 0.099 165)
- #CA84AB
#CA84AB
oklch(69.7% 0.099 345.5)
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 #5BB18E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.018
- Tea #65AB7C ΔE 0.025
- Dusty Green #76A973 ΔE 0.039
- Dark Seafoam Green #3EAF76 ΔE 0.043
- Faded Green #7BB274 ΔE 0.044
- Bluey Green #2BB179 ΔE 0.047
- Light Sea Green #20B2AA ΔE 0.047
- Dark Seafoam #1FB57A ΔE 0.051
Use #5BB18E 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.