#4FA3A5
Closest named color: Cadet Blue (#5F9EA0). oklch(66.4% 0.081 197.5), rgb(79, 163, 165).
Aa
Black text reads best on this color (7.11:1).
About this color
#4FA3A5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.081 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.018 away. Black text reads best on it, at 7.11:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.11:1 |
| White text | 2.95:1 |
Values
| HEX | #4FA3A5 |
| RGB | rgb(79, 163, 165) |
| HSL | hsl(181, 35%, 48%) |
| OKLCH | oklch(66.4% 0.081 197.5) |
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 #4FA3A5 | 2.95:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #4FA3A5 | 7.11:1 | AAA | Lc 48.2 | Large or bold text, headings |
| #4FA3A5 text on white | 2.95:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #4FA3A5 text on black | 7.11:1 | AAA | Lc -45.9 | 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
#F2F7F7
oklch(97.2% 0.005 197.1)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#C9DEDE
oklch(88.5% 0.022 196.8)
-
Step 300
300
#A4C9CA
oklch(80.9% 0.039 198.4)
-
Step 400
400
#6FADAE
oklch(70.6% 0.064 197.1)
-
Step 500
500 (this color)
#4FA3A5
oklch(66.4% 0.081 197.5)
-
Step 600
600
#1A8385
oklch(55.6% 0.089 196.9)
-
Step 700
700
#066F71
oklch(49.2% 0.082 197)
-
Step 800
800
#0E5A5C
oklch(42.6% 0.068 197.7)
-
Step 900
900
#174A4B
oklch(37.6% 0.053 197)
-
Step 950
950
#102B2C
oklch(26.9% 0.033 198.6)
#4FA3A5 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) | #999CA5 | 0.084 |
| Deuteranopia (no green cones) | #8B92A6 | 0.078 |
| Tritanopia (no blue cones) | #09A8A3 | 0.033 |
| Achromatopsia (no color) | #969696 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA3A5
#4FA3A5
oklch(66.4% 0.081 197.5)
- #C07F81
#C07F81
oklch(66.4% 0.081 17.5)
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 #4FA3A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.018
- Dull Teal #5F9E8F ΔE 0.032
- Grey Teal #5E9B8A ΔE 0.039
- Sea #3C9992 ΔE 0.041
- Light Sea Green #20B2AA ΔE 0.045
- Persian Green #2A9D8F ΔE 0.045
- Greyblue #77A1B5 ΔE 0.050
- Turquoise Blue #06B1C4 ΔE 0.053
Use #4FA3A5 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.