#4599FD
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.9% 0.169 254.7), rgb(69, 153, 253).
Aa
Black text reads best on this color (7.22:1).
About this color
#4599FD is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.169 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.021 away. Black text reads best on it, at 7.22:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.22:1 |
| White text | 2.90:1 |
Values
| HEX | #4599FD |
| RGB | rgb(69, 153, 253) |
| HSL | hsl(213, 98%, 63%) |
| OKLCH | oklch(67.9% 0.169 254.7) |
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 #4599FD | 2.90:1 | Fails | Lc -60.3 | Content text, not long reading |
| Black text on #4599FD | 7.22:1 | AAA | Lc 49.0 | Large or bold text, headings |
| #4599FD text on white | 2.90:1 | Fails | Lc 55.0 | Large or bold text, headings |
| #4599FD text on black | 7.22:1 | AAA | Lc -46.8 | 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
#EFF6FF
oklch(97% 0.014 254.6)
-
Step 100
100
#DDEBFF
oklch(93.6% 0.031 257.2)
-
Step 200
200
#C0DCFF
oklch(88.5% 0.057 254.1)
-
Step 300
300
#95C4FF
oklch(80.9% 0.098 254.5)
-
Step 400
400 (this color)
#4599FD
oklch(67.9% 0.169 254.7)
-
Step 500
500
#0A87FF
oklch(63.1% 0.202 254.7)
-
Step 600
600
#0071D9
oklch(55.6% 0.181 254.6)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#004D98
oklch(42.6% 0.139 254.8)
-
Step 900
900
#004080
oklch(37.6% 0.123 254.7)
-
Step 950
950
#002650
oklch(27.2% 0.088 254.4)
#4599FD 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) | #6AA1FF | 0.042 |
| Deuteranopia (no green cones) | #4C90FB | 0.023 |
| Tritanopia (no blue cones) | #00B0BF | 0.128 |
| Achromatopsia (no color) | #979797 | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4599FD
#4599FD
oklch(67.9% 0.169 254.7)
- #CB8900
#CB8900
oklch(68% 0.143 74.9)
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 #4599FD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.021
- Cornflower Blue #6495ED ΔE 0.033
- Dodger Blue #1E90FF ΔE 0.035
- Dark Sky Blue #448EE4 ΔE 0.044
- Soft Blue #6488EA ΔE 0.051
- Periwinkle Blue #8F99FB ΔE 0.077
- Lavender Blue #8B88F8 ΔE 0.080
- Cornflower #6A79F7 ΔE 0.082
Use #4599FD 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.