#4599D7
Closest named color: Dark Sky Blue (#448EE4). oklch(65.8% 0.123 243.7), rgb(69, 153, 215).
Aa
Black text reads best on this color (6.79:1).
About this color
#4599D7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.123 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.040 away. Black text reads best on it, at 6.79:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.79:1 |
| White text | 3.09:1 |
Values
| HEX | #4599D7 |
| RGB | rgb(69, 153, 215) |
| HSL | hsl(205, 65%, 56%) |
| OKLCH | oklch(65.8% 0.123 243.7) |
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 #4599D7 | 3.09:1 | AA large text | Lc -63.0 | Content text, not long reading |
| Black text on #4599D7 | 6.79:1 | AA | Lc 46.5 | Large or bold text, headings |
| #4599D7 text on white | 3.09:1 | AA large text | Lc 57.6 | Large or bold text, headings |
| #4599D7 text on black | 6.79:1 | AA | Lc -44.2 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF5
oklch(93.5% 0.018 245.4)
-
Step 200
200
#C7DCEE
oklch(88.4% 0.034 244)
-
Step 300
300
#A0C6E5
oklch(81% 0.06 243.2)
-
Step 400
400
#6AA7D8
oklch(70.6% 0.096 244)
-
Step 500
500 (this color)
#4599D7
oklch(65.8% 0.123 243.7)
-
Step 600
600
#0979BB
oklch(55.5% 0.134 244)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#035383
oklch(42.6% 0.104 244.2)
-
Step 900
900
#124569
oklch(37.6% 0.081 244.2)
-
Step 950
950
#0D293D
oklch(27% 0.05 242.9)
#4599D7 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) | #7D9ADA | 0.057 |
| Deuteranopia (no green cones) | #698CD6 | 0.045 |
| Tritanopia (no blue cones) | #00A8AF | 0.088 |
| Achromatopsia (no color) | #929292 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4599D7
#4599D7
oklch(65.8% 0.123 243.7)
- #C68036
#C68036
oklch(66% 0.123 63.9)
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 #4599D7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.040
- Chefchaouen Blue #4895EF ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.047
- Faded Blue #658CBB ΔE 0.052
- Water Blue #0E87CC ΔE 0.062
- Soft Blue #6488EA ΔE 0.064
- Cool Blue #4984B8 ΔE 0.067
- Dusty Blue #5A86AD ΔE 0.072
Use #4599D7 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.