#4FA5DC
Closest named color: Cornflower Blue (#6495ED). oklch(69.2% 0.116 239.5), rgb(79, 165, 220).
Aa
Black text reads best on this color (7.74:1).
About this color
#4FA5DC is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.116 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.057 away. Black text reads best on it, at 7.74:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.74:1 |
| White text | 2.71:1 |
Values
| HEX | #4FA5DC |
| RGB | rgb(79, 165, 220) |
| HSL | hsl(203, 67%, 59%) |
| OKLCH | oklch(69.2% 0.116 239.5) |
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 #4FA5DC | 2.71:1 | Fails | Lc -57.5 | Large or bold text, headings |
| Black text on #4FA5DC | 7.74:1 | AAA | Lc 51.7 | Large or bold text, headings |
| #4FA5DC text on white | 2.71:1 | Fails | Lc 52.3 | Large or bold text, headings |
| #4FA5DC text on black | 7.74:1 | AAA | Lc -49.6 | 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
#DEECF7
oklch(93.6% 0.021 241.4)
-
Step 200
200
#C2DDF1
oklch(88.4% 0.04 240)
-
Step 300
300
#96C8EB
oklch(81% 0.072 239.3)
-
Step 400
400 (this color)
#4FA5DC
oklch(69.2% 0.116 239.5)
-
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
#002A41
oklch(27.1% 0.061 239)
#4FA5DC 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) | #8CA5DF | 0.063 |
| Deuteranopia (no green cones) | #7897DB | 0.051 |
| Tritanopia (no blue cones) | #00B3B8 | 0.083 |
| Achromatopsia (no color) | #9D9D9D | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA5DC
#4FA5DC
oklch(69.2% 0.116 239.5)
- #D0894D
#D0894D
oklch(69.1% 0.116 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 #4FA5DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.057
- Chefchaouen Blue #4895EF ΔE 0.059
- Turquoise Blue #06B1C4 ΔE 0.063
- Greyblue #77A1B5 ΔE 0.064
- Dark Sky Blue #448EE4 ΔE 0.069
- Faded Blue #658CBB ΔE 0.074
- Deep Sky Blue #00BFFF ΔE 0.076
- Bluegrey #85A3B2 ΔE 0.077
Use #4FA5DC 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.