#03B661
Closest named color: Cool Green (#33B864). oklch(68.1% 0.175 152.9), rgb(3, 182, 97).
Aa
Black text reads best on this color (7.86:1).
About this color
#03B661 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.175 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Cool Green (#33B864), ΔE 0.016 away. Black text reads best on it, at 7.86:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.175) |
| Temperature | in between |
| Nearest name | Cool Green (#33B864) |
| Black text | 7.86:1 |
| White text | 2.66:1 |
Values
| HEX | #03B661 |
| RGB | rgb(3, 182, 97) |
| HSL | hsl(152, 97%, 36%) |
| OKLCH | oklch(68.1% 0.175 152.9) |
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 #03B661 | 2.66:1 | Fails | Lc -56.3 | Large or bold text, headings |
| Black text on #03B661 | 7.86:1 | AAA | Lc 52.8 | Large or bold text, headings |
| #03B661 text on white | 2.66:1 | Fails | Lc 51.2 | Large or bold text, headings |
| #03B661 text on black | 7.86:1 | AAA | Lc -50.7 | 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
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DBF0E0
oklch(93.5% 0.031 152.9)
-
Step 200
200
#BCE5C6
oklch(88.4% 0.06 152.4)
-
Step 300
300
#87D59F
oklch(80.8% 0.109 153.2)
-
Step 400
400 (this color)
#03B661
oklch(68.1% 0.175 152.9)
-
Step 500
500
#00A457
oklch(63% 0.162 153)
-
Step 600
600
#008A48
oklch(55.5% 0.143 153)
-
Step 700
700
#00743C
oklch(49% 0.126 153.1)
-
Step 800
800
#005F30
oklch(42.6% 0.109 153.1)
-
Step 900
900
#005027
oklch(37.8% 0.098 152.9)
-
Step 950
950
#003015
oklch(27.1% 0.07 152.9)
#03B661 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) | #B6A65A | 0.150 |
| Deuteranopia (no green cones) | #A59967 | 0.149 |
| Tritanopia (no blue cones) | #00B3A2 | 0.093 |
| Achromatopsia (no color) | #9E9E9E | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03B661
#03B661
oklch(68.1% 0.175 152.9)
- #D56AC6
#D56AC6
oklch(68.1% 0.174 332.8)
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 #03B661, closest first.
No curated palette has a color within ΔE 0.04 of #03B661.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Green #33B864 ΔE 0.016
- Shamrock #01B44C ΔE 0.023
- Jade Green #2BAF6A ΔE 0.028
- Green Teal #0CB577 ΔE 0.029
- Medium Green #39AD48 ΔE 0.031
- Medium Sea Green #3CB371 ΔE 0.032
- Dark Mint Green #20C073 ΔE 0.034
- Dark Seafoam #1FB57A ΔE 0.035
Use #03B661 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.