#63A5AA
Closest named color: Cadet Blue (#5F9EA0). oklch(68% 0.068 201.9), rgb(99, 165, 170).
Aa
Black text reads best on this color (7.49:1).
About this color
#63A5AA is a medium-light, muted teal or cyan. In OKLCH its lightness is 68%, its chroma 0.068 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.023 away. Black text reads best on it, at 7.49:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (68%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.49:1 |
| White text | 2.80:1 |
Values
| HEX | #63A5AA |
| RGB | rgb(99, 165, 170) |
| HSL | hsl(184, 29%, 53%) |
| OKLCH | oklch(68% 0.068 201.9) |
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 #63A5AA | 2.80:1 | Fails | Lc -59.1 | Large or bold text, headings |
| Black text on #63A5AA | 7.49:1 | AAA | Lc 50.2 | Large or bold text, headings |
| #63A5AA text on white | 2.80:1 | Fails | Lc 53.8 | Large or bold text, headings |
| #63A5AA text on black | 7.49:1 | AAA | Lc -48.0 | 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
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C8DEE0
oklch(88.5% 0.024 203.4)
-
Step 300
300
#A1C9CC
oklch(80.8% 0.043 202)
-
Step 400
400 (this color)
#63A5AA
oklch(68% 0.068 201.9)
-
Step 500
500
#3C99A0
oklch(63.1% 0.087 202.1)
-
Step 600
600
#03838B
oklch(55.6% 0.094 202.4)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#015A60
oklch(42.6% 0.072 202.7)
-
Step 900
900
#124A4E
oklch(37.6% 0.056 202)
-
Step 950
950
#0D2C2E
oklch(27.1% 0.036 201.1)
#63A5AA 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) | #9CA0AA | 0.068 |
| Deuteranopia (no green cones) | #9096AA | 0.064 |
| Tritanopia (no blue cones) | #43AAA6 | 0.030 |
| Achromatopsia (no color) | #9A9A9A | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A5AA
#63A5AA
oklch(68% 0.068 201.9)
- #BF8885
#BF8885
oklch(68% 0.068 22.5)
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 #63A5AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.023
- Greyblue #77A1B5 ΔE 0.032
- Dull Teal #5F9E8F ΔE 0.040
- Bluegrey #85A3B2 ΔE 0.042
- Bluey Grey #89A0B0 ΔE 0.047
- Grey Teal #5E9B8A ΔE 0.049
- Light Sea Green #20B2AA ΔE 0.052
- Turquoise Blue #06B1C4 ΔE 0.055
Use #63A5AA 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.