#03B133
Closest named color: Kelly Green (#02AB2E). oklch(66.1% 0.206 145.3), rgb(3, 177, 51).
Aa
Black text reads best on this color (7.34:1).
About this color
#03B133 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.206 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.017 away. Black text reads best on it, at 7.34:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.206) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 7.34:1 |
| White text | 2.86:1 |
Values
| HEX | #03B133 |
| RGB | rgb(3, 177, 51) |
| HSL | hsl(137, 97%, 35%) |
| OKLCH | oklch(66.1% 0.206 145.3) |
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 #03B133 | 2.86:1 | Fails | Lc -59.3 | Large or bold text, headings |
| Black text on #03B133 | 7.34:1 | AAA | Lc 50.0 | Large or bold text, headings |
| #03B133 text on white | 2.86:1 | Fails | Lc 54.0 | Large or bold text, headings |
| #03B133 text on black | 7.34:1 | AAA | Lc -47.8 | 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
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DEEFDE
oklch(93.5% 0.029 145.3)
-
Step 200
200
#C3E4C3
oklch(88.6% 0.057 145.1)
-
Step 300
300
#97D299
oklch(80.9% 0.1 145.4)
-
Step 400
400
#55BA5E
oklch(70.7% 0.16 145.3)
-
Step 500
500 (this color)
#03B133
oklch(66.1% 0.206 145.3)
-
Step 600
600
#008C26
oklch(55.6% 0.174 145.3)
-
Step 700
700
#00761E
oklch(49.2% 0.154 145.2)
-
Step 800
800
#006117
oklch(42.8% 0.134 145.2)
-
Step 900
900
#005112
oklch(37.8% 0.118 145.3)
-
Step 950
950
#003007
oklch(26.9% 0.084 145.2)
#03B133 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) | #B49F1F | 0.154 |
| Deuteranopia (no green cones) | #A49440 | 0.154 |
| Tritanopia (no blue cones) | #00AC98 | 0.128 |
| Achromatopsia (no color) | #999999 | 0.207 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03B133
#03B133
oklch(66.1% 0.206 145.3)
- #CF5CD6
#CF5CD6
oklch(66.2% 0.205 325.3)
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 #03B133, closest first.
No curated palette has a color within ΔE 0.04 of #03B133.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.017
- Shamrock #01B44C ΔE 0.022
- Medium Green #39AD48 ΔE 0.031
- Leafy Green #51B73B ΔE 0.041
- Grass #5CAC2D ΔE 0.041
- Leaf Green #5CA904 ΔE 0.041
- Shamrock Green #02C14D ΔE 0.047
- Mid Green #50A747 ΔE 0.050
Use #03B133 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.