#4FA3D9
Closest named color: Cornflower Blue (#6495ED). oklch(68.6% 0.114 239.6), rgb(79, 163, 217).
Aa
Black text reads best on this color (7.57:1).
About this color
#4FA3D9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.114 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.056 away. Black text reads best on it, at 7.57:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.57:1 |
| White text | 2.77:1 |
Values
| HEX | #4FA3D9 |
| RGB | rgb(79, 163, 217) |
| HSL | hsl(203, 64%, 58%) |
| OKLCH | oklch(68.6% 0.114 239.6) |
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 #4FA3D9 | 2.77:1 | Fails | Lc -58.5 | Large or bold text, headings |
| Black text on #4FA3D9 | 7.57:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #4FA3D9 text on white | 2.77:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #4FA3D9 text on black | 7.57:1 | AAA | Lc -48.6 | 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 400.
-
Step 50
50
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C2DDF1
oklch(88.4% 0.04 240)
-
Step 300
300
#96C8EA
oklch(81% 0.071 238.5)
-
Step 400
400 (this color)
#4FA3D9
oklch(68.6% 0.114 239.6)
-
Step 500
500
#0093D6
oklch(63.1% 0.143 239.3)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#00466A
oklch(37.6% 0.086 240.1)
-
Step 950
950
#012A40
oklch(27.1% 0.059 238.3)
#4FA3D9 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) | #8AA3DB | 0.061 |
| Deuteranopia (no green cones) | #7795D8 | 0.051 |
| Tritanopia (no blue cones) | #00B1B5 | 0.083 |
| Achromatopsia (no color) | #9B9B9B | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA3D9
#4FA3D9
oklch(68.6% 0.114 239.6)
- #CE884D
#CE884D
oklch(68.7% 0.114 59.3)
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 #4FA3D9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.056
- Chefchaouen Blue #4895EF ΔE 0.057
- Greyblue #77A1B5 ΔE 0.061
- Turquoise Blue #06B1C4 ΔE 0.064
- Dark Sky Blue #448EE4 ΔE 0.066
- Faded Blue #658CBB ΔE 0.068
- Bluegrey #85A3B2 ΔE 0.076
- Bluey Grey #89A0B0 ΔE 0.079
Use #4FA3D9 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.