#4FA5B3
Closest named color: Cadet Blue (#5F9EA0). oklch(67.4% 0.085 209.5), rgb(79, 165, 179).
Aa
Black text reads best on this color (7.36:1).
About this color
#4FA5B3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.085 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.030 away. Black text reads best on it, at 7.36:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.36:1 |
| White text | 2.85:1 |
Values
| HEX | #4FA5B3 |
| RGB | rgb(79, 165, 179) |
| HSL | hsl(188, 40%, 51%) |
| OKLCH | oklch(67.4% 0.085 209.5) |
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 #4FA5B3 | 2.85:1 | Fails | Lc -59.7 | Large or bold text, headings |
| Black text on #4FA5B3 | 7.36:1 | AAA | Lc 49.6 | Large or bold text, headings |
| #4FA5B3 text on white | 2.85:1 | Fails | Lc 54.4 | Large or bold text, headings |
| #4FA5B3 text on black | 7.36:1 | AAA | Lc -47.4 | 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 400.
-
Step 50
50
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C4DFE4
oklch(88.5% 0.029 210)
-
Step 300
300
#99CBD3
oklch(81% 0.053 208.3)
-
Step 400
400 (this color)
#4FA5B3
oklch(67.4% 0.085 209.5)
-
Step 500
500
#039BAD
oklch(63.2% 0.109 209.3)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950
#022C32
oklch(26.9% 0.045 209.3)
#4FA5B3 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) | #98A0B4 | 0.080 |
| Deuteranopia (no green cones) | #8994B3 | 0.074 |
| Tritanopia (no blue cones) | #00ACA9 | 0.042 |
| Achromatopsia (no color) | #999999 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA5B3
#4FA5B3
oklch(67.4% 0.085 209.5)
- #C58378
#C58378
oklch(67.5% 0.084 29.8)
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 #4FA5B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.030
- Greyblue #77A1B5 ΔE 0.040
- Turquoise Blue #06B1C4 ΔE 0.040
- Light Sea Green #20B2AA ΔE 0.049
- Dull Teal #5F9E8F ΔE 0.051
- Bluegrey #85A3B2 ΔE 0.055
- Sea #3C9992 ΔE 0.058
- Grey Teal #5E9B8A ΔE 0.058
Use #4FA5B3 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.