#4FA5D9
Closest named color: Turquoise Blue (#06B1C4). oklch(69% 0.113 238), rgb(79, 165, 217).
Aa
Black text reads best on this color (7.71:1).
About this color
#4FA5D9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.113 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.060 away. Black text reads best on it, at 7.71:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.71:1 |
| White text | 2.72:1 |
Values
| HEX | #4FA5D9 |
| RGB | rgb(79, 165, 217) |
| HSL | hsl(203, 64%, 58%) |
| OKLCH | oklch(69% 0.113 238) |
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 #4FA5D9 | 2.72:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #4FA5D9 | 7.71:1 | AAA | Lc 51.6 | Large or bold text, headings |
| #4FA5D9 text on white | 2.72:1 | Fails | Lc 52.5 | Large or bold text, headings |
| #4FA5D9 text on black | 7.71:1 | AAA | Lc -49.4 | 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
#F0F7FB
oklch(97.2% 0.009 232.4)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C2DEF0
oklch(88.6% 0.039 236.1)
-
Step 300
300
#96C8E9
oklch(80.9% 0.07 237.7)
-
Step 400
400 (this color)
#4FA5D9
oklch(69% 0.113 238)
-
Step 500
500
#0093D3
oklch(63% 0.14 238.1)
-
Step 600
600
#007CB2
oklch(55.6% 0.123 237.7)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#00557C
oklch(42.7% 0.094 237.9)
-
Step 900
900
#004768
oklch(37.7% 0.083 237.5)
-
Step 950
950
#002A40
oklch(27% 0.06 237.8)
#4FA5D9 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) | #8DA4DB | 0.064 |
| Deuteranopia (no green cones) | #7A97D8 | 0.053 |
| Tritanopia (no blue cones) | #00B2B7 | 0.078 |
| Achromatopsia (no color) | #9D9D9D | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA5D9
#4FA5D9
oklch(69% 0.113 238)
- #CF8951
#CF8951
oklch(69% 0.112 58.1)
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 #4FA5D9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.060
- Greyblue #77A1B5 ΔE 0.060
- Cornflower Blue #6495ED ΔE 0.061
- Chefchaouen Blue #4895EF ΔE 0.062
- Dark Sky Blue #448EE4 ΔE 0.071
- Faded Blue #658CBB ΔE 0.072
- Bluegrey #85A3B2 ΔE 0.074
- Bluey Grey #89A0B0 ΔE 0.078
Use #4FA5D9 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.