#4FA9F0
Closest named color: Cornflower Blue (#6495ED). oklch(71.1% 0.135 245.2), rgb(79, 169, 240).
Aa
Black text reads best on this color (8.26:1).
About this color
#4FA9F0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.135 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.053 away. Black text reads best on it, at 8.26:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.26:1 |
| White text | 2.54:1 |
Values
| HEX | #4FA9F0 |
| RGB | rgb(79, 169, 240) |
| HSL | hsl(206, 84%, 63%) |
| OKLCH | oklch(71.1% 0.135 245.2) |
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 #4FA9F0 | 2.54:1 | Fails | Lc -54.6 | Large or bold text, headings |
| Black text on #4FA9F0 | 8.26:1 | AAA | Lc 54.5 | Large or bold text, headings |
| #4FA9F0 text on white | 2.54:1 | Fails | Lc 49.5 | Large or bold text, headings |
| #4FA9F0 text on black | 8.26:1 | AAA | Lc -52.5 | 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
#EFF6FD
oklch(97% 0.012 248)
-
Step 100
100
#DDECFA
oklch(93.6% 0.025 246.2)
-
Step 200
200
#C0DDF7
oklch(88.5% 0.047 245.4)
-
Step 300
300
#93C7F4
oklch(81% 0.084 245.2)
-
Step 400
400 (this color)
#4FA9F0
oklch(71.1% 0.135 245.2)
-
Step 500
500
#0090E2
oklch(63.1% 0.159 245)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A2
oklch(49% 0.125 245.5)
-
Step 800
800
#005386
oklch(42.8% 0.108 245.3)
-
Step 900
900
#004570
oklch(37.7% 0.095 244.9)
-
Step 950
950
#002945
oklch(27.1% 0.068 244.5)
#4FA9F0 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) | #89ABF3 | 0.058 |
| Deuteranopia (no green cones) | #739BEF | 0.046 |
| Tritanopia (no blue cones) | #00BAC2 | 0.099 |
| Achromatopsia (no color) | #A2A2A2 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA9F0
#4FA9F0
oklch(71.1% 0.135 245.2)
- #DA8E38
#DA8E38
oklch(71% 0.135 65.4)
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 #4FA9F0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.053
- Chefchaouen Blue #4895EF ΔE 0.056
- Deep Sky Blue #00BFFF ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.075
- Carolina Blue #8AB8FE ΔE 0.076
- Periwinkle Blue #8F99FB ΔE 0.078
- Turquoise Blue #06B1C4 ΔE 0.083
- Dodger Blue #1E90FF ΔE 0.084
Use #4FA9F0 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.