#03B151
Closest named color: Shamrock (#01B44C). oklch(66.5% 0.183 149.9), rgb(3, 177, 81).
Aa
Black text reads best on this color (7.41:1).
About this color
#03B151 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.183 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.011 away. Black text reads best on it, at 7.41:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.183) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.41:1 |
| White text | 2.83:1 |
Values
| HEX | #03B151 |
| RGB | rgb(3, 177, 81) |
| HSL | hsl(147, 97%, 35%) |
| OKLCH | oklch(66.5% 0.183 149.9) |
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 #03B151 | 2.83:1 | Fails | Lc -58.9 | Large or bold text, headings |
| Black text on #03B151 | 7.41:1 | AAA | Lc 50.4 | Large or bold text, headings |
| #03B151 text on white | 2.83:1 | Fails | Lc 53.7 | Large or bold text, headings |
| #03B151 text on black | 7.41:1 | AAA | Lc -48.2 | 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 500.
-
Step 50
50
#F0F8F1
oklch(97.1% 0.013 149.3)
-
Step 100
100
#DEEFE1
oklch(93.6% 0.026 150.8)
-
Step 200
200
#C3E3C8
oklch(88.5% 0.05 149.7)
-
Step 300
300
#97D1A2
oklch(80.8% 0.089 149.9)
-
Step 400
400
#55B96F
oklch(70.7% 0.143 149.8)
-
Step 500
500 (this color)
#03B151
oklch(66.5% 0.183 149.9)
-
Step 600
600
#008B3E
oklch(55.6% 0.154 149.9)
-
Step 700
700
#007533
oklch(49.1% 0.136 149.9)
-
Step 800
800
#006028
oklch(42.7% 0.119 149.7)
-
Step 900
900
#005021
oklch(37.7% 0.104 150)
-
Step 950
950
#003011
oklch(27% 0.074 150)
#03B151 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) | #B2A148 | 0.149 |
| Deuteranopia (no green cones) | #A29558 | 0.148 |
| Tritanopia (no blue cones) | #00AE9B | 0.102 |
| Achromatopsia (no color) | #999999 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03B151
#03B151
oklch(66.5% 0.183 149.9)
- #CF63C8
#CF63C8
oklch(66.4% 0.183 329.9)
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 #03B151, closest first.
No curated palette has a color within ΔE 0.04 of #03B151.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.011
- Medium Green #39AD48 ΔE 0.017
- Kelly Green #02AB2E ΔE 0.033
- Cool Green #33B864 ΔE 0.033
- Jade Green #2BAF6A ΔE 0.035
- Mid Green #50A747 ΔE 0.037
- Dark Pastel Green #56AE57 ΔE 0.039
- Seaweed Green #35AD6B ΔE 0.041
Use #03B151 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.