#4FA3DF
Closest named color: Cornflower Blue (#6495ED). oklch(68.9% 0.12 242.4), rgb(79, 163, 223).
Aa
Black text reads best on this color (7.63:1).
About this color
#4FA3DF is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.120 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.050 away. Black text reads best on it, at 7.63:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.63:1 |
| White text | 2.74:1 |
Values
| HEX | #4FA3DF |
| RGB | rgb(79, 163, 223) |
| HSL | hsl(205, 69%, 59%) |
| OKLCH | oklch(68.9% 0.12 242.4) |
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 #4FA3DF | 2.74:1 | Fails | Lc -58.1 | Large or bold text, headings |
| Black text on #4FA3DF | 7.63:1 | AAA | Lc 51.1 | Large or bold text, headings |
| #4FA3DF text on white | 2.74:1 | Fails | Lc 52.9 | Large or bold text, headings |
| #4FA3DF text on black | 7.63:1 | AAA | Lc -49.0 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200
#C2DDF3
oklch(88.5% 0.042 242.7)
-
Step 300
300
#96C7EE
oklch(80.9% 0.076 242.8)
-
Step 400
400 (this color)
#4FA3DF
oklch(68.9% 0.12 242.4)
-
Step 500
500
#0091DC
oklch(63% 0.151 242.6)
-
Step 600
600
#007ABA
oklch(55.6% 0.133 242.5)
-
Step 700
700
#00669D
oklch(49% 0.118 242.7)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#00466D
oklch(37.8% 0.09 242.2)
-
Step 950
950
#012943
oklch(27% 0.064 243.1)
#4FA3DF 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) | #88A4E2 | 0.059 |
| Deuteranopia (no green cones) | #7496DE | 0.046 |
| Tritanopia (no blue cones) | #00B2B8 | 0.088 |
| Achromatopsia (no color) | #9C9C9C | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA3DF
#4FA3DF
oklch(68.9% 0.12 242.4)
- #CF8945
#CF8945
oklch(68.9% 0.12 62.6)
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 #4FA3DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.050
- Chefchaouen Blue #4895EF ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.062
- Greyblue #77A1B5 ΔE 0.069
- Turquoise Blue #06B1C4 ΔE 0.070
- Faded Blue #658CBB ΔE 0.072
- Soft Blue #6488EA ΔE 0.078
- Deep Sky Blue #00BFFF ΔE 0.079
Use #4FA3DF 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.