#4599EE
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.1% 0.15 251.3), rgb(69, 153, 238).
Aa
Black text reads best on this color (7.04:1).
About this color
#4599EE is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.150 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.011 away. Black text reads best on it, at 7.04:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.04:1 |
| White text | 2.98:1 |
Values
| HEX | #4599EE |
| RGB | rgb(69, 153, 238) |
| HSL | hsl(210, 83%, 60%) |
| OKLCH | oklch(67.1% 0.15 251.3) |
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 #4599EE | 2.98:1 | Fails | Lc -61.4 | Content text, not long reading |
| Black text on #4599EE | 7.04:1 | AAA | Lc 48.0 | Large or bold text, headings |
| #4599EE text on white | 2.98:1 | Fails | Lc 56.1 | Large or bold text, headings |
| #4599EE text on black | 7.04:1 | AAA | Lc -45.7 | 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
#C1DCFB
oklch(88.5% 0.052 252)
-
Step 300
300
#93C5FC
oklch(80.9% 0.094 251.4)
-
Step 400
400 (this color)
#4599EE
oklch(67.1% 0.15 251.3)
-
Step 500
500
#008BF4
oklch(63.1% 0.185 251.3)
-
Step 600
600
#0075CE
oklch(55.7% 0.162 251.1)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#004279
oklch(37.6% 0.11 251.3)
-
Step 950
950
#00274B
oklch(27% 0.079 251.1)
#4599EE 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) | #729EF2 | 0.046 |
| Deuteranopia (no green cones) | #5A8EEC | 0.031 |
| Tritanopia (no blue cones) | #00ADB8 | 0.114 |
| Achromatopsia (no color) | #959595 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4599EE
#4599EE
oklch(67.1% 0.15 251.3)
- #CC8400
#CC8400
oklch(67.2% 0.144 71.3)
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 #4599EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.011
- Cornflower Blue #6495ED ΔE 0.027
- Dark Sky Blue #448EE4 ΔE 0.031
- Dodger Blue #1E90FF ΔE 0.044
- Soft Blue #6488EA ΔE 0.048
- Water Blue #0E87CC ΔE 0.076
- Faded Blue #658CBB ΔE 0.078
- Periwinkle Blue #8F99FB ΔE 0.081
Use #4599EE 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.