#0590EA
Closest named color: Dark Sky Blue (#448EE4). oklch(63.6% 0.168 247.4), rgb(5, 144, 234).
Aa
Black text reads best on this color (6.18:1).
About this color
#0590EA is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.168 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.026 away. Black text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.18:1 |
| White text | 3.39:1 |
Values
| HEX | #0590EA |
| RGB | rgb(5, 144, 234) |
| HSL | hsl(204, 96%, 47%) |
| OKLCH | oklch(63.6% 0.168 247.4) |
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 #0590EA | 3.39:1 | AA large text | Lc -66.2 | Content text, not long reading |
| Black text on #0590EA | 6.18:1 | AA | Lc 43.3 | Non-text elements, placeholder text |
| #0590EA text on white | 3.39:1 | AA large text | Lc 60.7 | Content text, not long reading |
| #0590EA text on black | 6.18:1 | AA | Lc -41.0 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEECF9
oklch(93.6% 0.023 246)
-
Step 200
200
#C2DDF6
oklch(88.6% 0.045 246.3)
-
Step 300
300
#96C6F3
oklch(80.9% 0.082 247.2)
-
Step 400
400
#56A7EE
oklch(70.8% 0.131 247.3)
-
Step 500
500 (this color)
#0590EA
oklch(63.6% 0.168 247.4)
-
Step 600
600
#0077C4
oklch(55.5% 0.148 247.6)
-
Step 700
700
#0064A6
oklch(49.1% 0.131 247.6)
-
Step 800
800
#005289
oklch(42.7% 0.113 247.3)
-
Step 900
900
#004473
oklch(37.7% 0.1 247.4)
-
Step 950
950
#022846
oklch(27% 0.069 247.6)
#0590EA 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) | #6395EE | 0.059 |
| Deuteranopia (no green cones) | #4183E8 | 0.038 |
| Tritanopia (no blue cones) | #00A6B2 | 0.118 |
| Achromatopsia (no color) | #8B8B8B | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0590EA
#0590EA
oklch(63.6% 0.168 247.4)
- #C27800
#C27800
oklch(63.7% 0.14 67.7)
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 #0590EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.026
- Dodger Blue #1E90FF ΔE 0.033
- Chefchaouen Blue #4895EF ΔE 0.036
- Water Blue #0E87CC ΔE 0.048
- Soft Blue #6488EA ΔE 0.057
- Cornflower Blue #6495ED ΔE 0.060
- Clear Blue #247AFD ΔE 0.066
- Cool Blue #4984B8 ΔE 0.078
Use #0590EA 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.