#63B191
Closest named color: Greeny Blue (#42B395). oklch(70.1% 0.092 165.4), rgb(99, 177, 145).
Aa
Black text reads best on this color (8.22:1).
About this color
#63B191 is a medium-light, moderately saturated green. In OKLCH its lightness is 70%, its chroma 0.092 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 0.024 away. Black text reads best on it, at 8.22:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.22:1 |
| White text | 2.55:1 |
Values
| HEX | #63B191 |
| RGB | rgb(99, 177, 145) |
| HSL | hsl(155, 33%, 54%) |
| OKLCH | oklch(70.1% 0.092 165.4) |
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 #63B191 | 2.55:1 | Fails | Lc -54.9 | Large or bold text, headings |
| Black text on #63B191 | 8.22:1 | AAA | Lc 54.2 | Large or bold text, headings |
| #63B191 text on white | 2.55:1 | Fails | Lc 49.8 | Large or bold text, headings |
| #63B191 text on black | 8.22:1 | AAA | Lc -52.1 | 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
#E0EEE7
oklch(93.7% 0.018 164.6)
-
Step 200
200
#C7E0D4
oklch(88.5% 0.031 165.2)
-
Step 300
300
#9ECDB8
oklch(80.9% 0.058 165.8)
-
Step 400
400 (this color)
#63B191
oklch(70.1% 0.092 165.4)
-
Step 500
500
#2E9F78
oklch(63% 0.116 165.5)
-
Step 600
600
#008863
oklch(55.6% 0.116 165.8)
-
Step 700
700
#007352
oklch(49.2% 0.104 164.9)
-
Step 800
800
#005E43
oklch(42.7% 0.089 165.5)
-
Step 900
900
#054E38
oklch(37.7% 0.076 165.9)
-
Step 950
950
#092E21
oklch(27.1% 0.048 165.8)
#63B191 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) | #AEA78F | 0.091 |
| Deuteranopia (no green cones) | #A29E93 | 0.089 |
| Tritanopia (no blue cones) | #4CB1A8 | 0.035 |
| Achromatopsia (no color) | #A2A2A2 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B191
#63B191
oklch(70.1% 0.092 165.4)
- #C887AB
#C887AB
oklch(70% 0.092 345.4)
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 #63B191, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.024
- Tea #65AB7C ΔE 0.029
- Dusty Green #76A973 ΔE 0.040
- Faded Green #7BB274 ΔE 0.043
- Sage #87AE73 ΔE 0.048
- Light Sea Green #20B2AA ΔE 0.048
- Sage Green #88B378 ΔE 0.049
- Greeny Grey #7EA07A ΔE 0.051
Use #63B191 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.