#0990EF
Closest named color: Dodger Blue (#1E90FF). oklch(64% 0.173 248.8), rgb(9, 144, 239).
Aa
Black text reads best on this color (6.24:1).
About this color
#0990EF is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.173 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.025 away. Black text reads best on it, at 6.24:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.24:1 |
| White text | 3.36:1 |
Values
| HEX | #0990EF |
| RGB | rgb(9, 144, 239) |
| HSL | hsl(205, 93%, 49%) |
| OKLCH | oklch(64% 0.173 248.8) |
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 #0990EF | 3.36:1 | AA large text | Lc -65.8 | Content text, not long reading |
| Black text on #0990EF | 6.24:1 | AA | Lc 43.7 | Non-text elements, placeholder text |
| #0990EF text on white | 3.36:1 | AA large text | Lc 60.4 | Content text, not long reading |
| #0990EF text on black | 6.24:1 | AA | Lc -41.3 | 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
#DEECFA
oklch(93.7% 0.024 248.1)
-
Step 200
200
#C2DCF8
oklch(88.4% 0.048 250.3)
-
Step 300
300
#96C6F5
oklch(81% 0.084 248.4)
-
Step 400
400
#56A6F1
oklch(70.7% 0.136 249)
-
Step 500
500 (this color)
#0990EF
oklch(64% 0.173 248.8)
-
Step 600
600
#0077C7
oklch(55.7% 0.152 248.5)
-
Step 700
700
#0063A9
oklch(49% 0.136 249.1)
-
Step 800
800
#00518B
oklch(42.6% 0.117 248.8)
-
Step 900
900
#004475
oklch(37.8% 0.103 248.3)
-
Step 950
950
#022847
oklch(27% 0.071 248.4)
#0990EF 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) | #6096F3 | 0.056 |
| Deuteranopia (no green cones) | #3B84ED | 0.033 |
| Tritanopia (no blue cones) | #00A7B4 | 0.124 |
| Achromatopsia (no color) | #8C8C8C | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0990EF
#0990EF
oklch(64% 0.173 248.8)
- #C27900
#C27900
oklch(63.9% 0.14 68.4)
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 #0990EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.025
- Dark Sky Blue #448EE4 ΔE 0.028
- Chefchaouen Blue #4895EF ΔE 0.034
- Water Blue #0E87CC ΔE 0.055
- Soft Blue #6488EA ΔE 0.056
- Cornflower Blue #6495ED ΔE 0.058
- Clear Blue #247AFD ΔE 0.062
- Cornflower #6A79F7 ΔE 0.082
Use #0990EF 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.