#4FA5F8
Closest named color: Cornflower Blue (#6495ED). oklch(70.6% 0.148 250), rgb(79, 165, 248).
Aa
Black text reads best on this color (8.06:1).
About this color
#4FA5F8 is a medium-light, vivid blue. In OKLCH its lightness is 71%, its chroma 0.148 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.043 away. Black text reads best on it, at 8.06:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.06:1 |
| White text | 2.60:1 |
Values
| HEX | #4FA5F8 |
| RGB | rgb(79, 165, 248) |
| HSL | hsl(209, 92%, 64%) |
| OKLCH | oklch(70.6% 0.148 250) |
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 #4FA5F8 | 2.60:1 | Fails | Lc -55.6 | Large or bold text, headings |
| Black text on #4FA5F8 | 8.06:1 | AAA | Lc 53.5 | Large or bold text, headings |
| #4FA5F8 text on white | 2.60:1 | Fails | Lc 50.5 | Large or bold text, headings |
| #4FA5F8 text on black | 8.06:1 | AAA | Lc -51.4 | 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
#EFF6FE
oklch(97% 0.013 251.6)
-
Step 100
100
#DDECFC
oklch(93.7% 0.027 249.9)
-
Step 200
200
#C0DCFA
oklch(88.4% 0.051 250.2)
-
Step 300
300
#93C6FA
oklch(81% 0.091 249.5)
-
Step 400
400 (this color)
#4FA5F8
oklch(70.6% 0.148 250)
-
Step 500
500
#008CF0
oklch(63.1% 0.179 250.1)
-
Step 600
600
#0076CB
oklch(55.7% 0.158 250)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#00518E
oklch(42.8% 0.121 249.9)
-
Step 900
900
#004377
oklch(37.7% 0.106 249.9)
-
Step 950
950
#00274A
oklch(26.9% 0.077 250.5)
#4FA5F8 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) | #80A9FC | 0.050 |
| Deuteranopia (no green cones) | #6899F6 | 0.035 |
| Tritanopia (no blue cones) | #00B9C3 | 0.113 |
| Achromatopsia (no color) | #A0A0A0 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA5F8
#4FA5F8
oklch(70.6% 0.148 250)
- #DA8D17
#DA8D17
oklch(70.6% 0.148 69.7)
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 #4FA5F8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.043
- Chefchaouen Blue #4895EF ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.066
- Deep Sky Blue #00BFFF ΔE 0.069
- Dodger Blue #1E90FF ΔE 0.069
- Periwinkle Blue #8F99FB ΔE 0.070
- Soft Blue #6488EA ΔE 0.075
- Carolina Blue #8AB8FE ΔE 0.082
Use #4FA5F8 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.