#5BB138
Closest named color: Grass (#5CAC2D). oklch(68.2% 0.177 138.1), rgb(91, 177, 56).
Aa
Black text reads best on this color (7.79:1).
About this color
#5BB138 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.177 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass (#5CAC2D), ΔE 0.014 away. Black text reads best on it, at 7.79:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.177) |
| Temperature | in between |
| Nearest name | Grass (#5CAC2D) |
| Black text | 7.79:1 |
| White text | 2.69:1 |
Values
| HEX | #5BB138 |
| RGB | rgb(91, 177, 56) |
| HSL | hsl(103, 52%, 46%) |
| OKLCH | oklch(68.2% 0.177 138.1) |
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 #5BB138 | 2.69:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #5BB138 | 7.79:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #5BB138 text on white | 2.69:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #5BB138 text on black | 7.79:1 | AAA | Lc -49.9 | 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
#F1F8EE
oklch(97.1% 0.015 136.1)
-
Step 100
100
#E0EFDB
oklch(93.5% 0.031 137.8)
-
Step 200
200
#C6E3BC
oklch(88.4% 0.061 137.7)
-
Step 300
300
#9DD28B
oklch(80.9% 0.111 138)
-
Step 400
400 (this color)
#5BB138
oklch(68.2% 0.177 138.1)
-
Step 500
500
#41A300
oklch(63.2% 0.196 138.1)
-
Step 600
600
#368900
oklch(55.6% 0.172 138)
-
Step 700
700
#2C7300
oklch(49.1% 0.152 138.1)
-
Step 800
800
#235E00
oklch(42.6% 0.131 138)
-
Step 900
900
#1C4F00
oklch(37.8% 0.117 138)
-
Step 950
950
#0D2F00
oklch(26.9% 0.084 138.2)
#5BB138 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) | #B6A227 | 0.114 |
| Deuteranopia (no green cones) | #AB9B43 | 0.115 |
| Tritanopia (no blue cones) | #55AB99 | 0.123 |
| Achromatopsia (no color) | #9E9E9E | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB138
#5BB138
oklch(68.2% 0.177 138.1)
- #C570DE
#C570DE
oklch(68.1% 0.177 318.2)
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 #5BB138, closest first.
No curated palette has a color within ΔE 0.04 of #5BB138.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass #5CAC2D ΔE 0.014
- Leafy Green #51B73B ΔE 0.017
- Leaf #71AA34 ΔE 0.026
- Leaf Green #5CA904 ΔE 0.028
- Medium Green #39AD48 ΔE 0.031
- Dark Pastel Green #56AE57 ΔE 0.033
- Mid Green #50A747 ΔE 0.037
- Fern #63A950 ΔE 0.038
Use #5BB138 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.