#4FA1B0
Closest named color: Cadet Blue (#5F9EA0). oklch(66.4% 0.083 211.1), rgb(79, 161, 176).
Aa
Black text reads best on this color (7.05:1).
About this color
#4FA1B0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.083 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.025 away. Black text reads best on it, at 7.05:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.05:1 |
| White text | 2.97:1 |
Values
| HEX | #4FA1B0 |
| RGB | rgb(79, 161, 176) |
| HSL | hsl(189, 38%, 50%) |
| OKLCH | oklch(66.4% 0.083 211.1) |
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 #4FA1B0 | 2.97:1 | Fails | Lc -61.5 | Content text, not long reading |
| Black text on #4FA1B0 | 7.05:1 | AAA | Lc 47.9 | Large or bold text, headings |
| #4FA1B0 text on white | 2.97:1 | Fails | Lc 56.2 | Large or bold text, headings |
| #4FA1B0 text on black | 7.05:1 | AAA | Lc -45.6 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A3C8CF
oklch(80.8% 0.041 210.4)
-
Step 400
400
#6FACB8
oklch(70.7% 0.065 211.4)
-
Step 500
500 (this color)
#4FA1B0
oklch(66.4% 0.083 211.1)
-
Step 600
600
#1C8191
oklch(55.6% 0.089 211.1)
-
Step 700
700
#086D7B
oklch(49.1% 0.083 210.5)
-
Step 800
800
#0F5964
oklch(42.7% 0.069 210.3)
-
Step 900
900
#184952
oklch(37.7% 0.054 211.9)
-
Step 950
950
#102B30
oklch(27% 0.034 211.3)
#4FA1B0 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) | #949CB1 | 0.077 |
| Deuteranopia (no green cones) | #8691B0 | 0.071 |
| Tritanopia (no blue cones) | #00A8A5 | 0.044 |
| Achromatopsia (no color) | #969696 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA1B0
#4FA1B0
oklch(66.4% 0.083 211.1)
- #C18074
#C18074
oklch(66.3% 0.083 30.9)
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 #4FA1B0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.025
- Greyblue #77A1B5 ΔE 0.041
- Dull Teal #5F9E8F ΔE 0.047
- Turquoise Blue #06B1C4 ΔE 0.049
- Sea #3C9992 ΔE 0.051
- Grey Teal #5E9B8A ΔE 0.054
- Light Sea Green #20B2AA ΔE 0.056
- Bluegrey #85A3B2 ΔE 0.058
Use #4FA1B0 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.