#63A2A3
Closest named color: Cadet Blue (#5F9EA0). oklch(67% 0.065 197), rgb(99, 162, 163).
Aa
Black text reads best on this color (7.22:1).
About this color
#63A2A3 is a medium-light, muted teal or cyan. In OKLCH its lightness is 67%, its chroma 0.065 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.013 away. Black text reads best on it, at 7.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.22:1 |
| White text | 2.90:1 |
Values
| HEX | #63A2A3 |
| RGB | rgb(99, 162, 163) |
| HSL | hsl(181, 26%, 51%) |
| OKLCH | oklch(67% 0.065 197) |
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 #63A2A3 | 2.90:1 | Fails | Lc -60.6 | Content text, not long reading |
| Black text on #63A2A3 | 7.22:1 | AAA | Lc 48.7 | Large or bold text, headings |
| #63A2A3 text on white | 2.90:1 | Fails | Lc 55.3 | Large or bold text, headings |
| #63A2A3 text on black | 7.22:1 | AAA | Lc -46.5 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEC
oklch(93.5% 0.012 197)
-
Step 200
200
#C9DEDE
oklch(88.5% 0.022 196.8)
-
Step 300
300
#A3C9CA
oklch(80.9% 0.04 198.4)
-
Step 400
400 (this color)
#63A2A3
oklch(67% 0.065 197)
-
Step 500
500
#42999B
oklch(63.1% 0.083 197.3)
-
Step 600
600
#158385
oklch(55.5% 0.09 196.8)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800
#0B5A5C
oklch(42.6% 0.069 197.6)
-
Step 900
900
#164A4B
oklch(37.6% 0.054 196.9)
-
Step 950
950
#0F2C2C
oklch(27.1% 0.035 195.3)
#63A2A3 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) | #9A9CA3 | 0.067 |
| Deuteranopia (no green cones) | #8F94A4 | 0.063 |
| Tritanopia (no blue cones) | #47A6A2 | 0.026 |
| Achromatopsia (no color) | #979797 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A2A3
#63A2A3
oklch(67% 0.065 197)
- #BA8587
#BA8587
oklch(67% 0.065 16.5)
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 #63A2A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.013
- Dull Teal #5F9E8F ΔE 0.030
- Greyblue #77A1B5 ΔE 0.038
- Grey Teal #5E9B8A ΔE 0.038
- Bluegrey #85A3B2 ΔE 0.047
- Bluey Grey #89A0B0 ΔE 0.051
- Sea #3C9992 ΔE 0.051
- Light Sea Green #20B2AA ΔE 0.055
Use #63A2A3 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.