#63A397
Closest named color: Dull Teal (#5F9E8F). oklch(66.9% 0.069 180.8), rgb(99, 163, 151).
Aa
Black text reads best on this color (7.21:1).
About this color
#63A397 is a medium-light, muted teal or cyan. In OKLCH its lightness is 67%, its chroma 0.069 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Teal (#5F9E8F), ΔE 0.017 away. Black text reads best on it, at 7.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dull Teal (#5F9E8F) |
| Black text | 7.21:1 |
| White text | 2.91:1 |
Values
| HEX | #63A397 |
| RGB | rgb(99, 163, 151) |
| HSL | hsl(169, 26%, 51%) |
| OKLCH | oklch(66.9% 0.069 180.8) |
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 #63A397 | 2.91:1 | Fails | Lc -60.7 | Content text, not long reading |
| Black text on #63A397 | 7.21:1 | AAA | Lc 48.7 | Large or bold text, headings |
| #63A397 text on white | 2.91:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #63A397 text on black | 7.21:1 | AAA | Lc -46.4 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CDDDDA
oklch(88.5% 0.018 183.5)
-
Step 300
300
#AAC8C2
oklch(80.9% 0.033 182)
-
Step 400
400
#7BACA2
oklch(70.7% 0.054 180.6)
-
Step 500
500 (this color)
#63A397
oklch(66.9% 0.069 180.8)
-
Step 600
600
#3A8276
oklch(55.7% 0.075 181)
-
Step 700
700
#2B6E63
oklch(49.2% 0.07 180.8)
-
Step 800
800
#265951
oklch(42.6% 0.057 181.8)
-
Step 900
900
#244943
oklch(37.6% 0.044 182.1)
-
Step 950
950
#162B27
oklch(27% 0.028 180.5)
#63A397 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) | #9E9C97 | 0.073 |
| Deuteranopia (no green cones) | #939498 | 0.069 |
| Tritanopia (no blue cones) | #4CA59F | 0.021 |
| Achromatopsia (no color) | #979797 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A397
#63A397
oklch(66.9% 0.069 180.8)
- #B98392
#B98392
oklch(66.8% 0.069 0.9)
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 #63A397, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Teal #5F9E8F ΔE 0.017
- Cadet Blue #5F9EA0 ΔE 0.023
- Grey Teal #5E9B8A ΔE 0.027
- Greeny Grey #7EA07A ΔE 0.045
- Sea #3C9992 ΔE 0.048
- Grey Green #86A17D ΔE 0.049
- Persian Green #2A9D8F ΔE 0.050
- Tea #65AB7C ΔE 0.052
Use #63A397 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.