#1091EA
Closest named color: Dark Sky Blue (#448EE4). oklch(63.9% 0.166 247.4), rgb(16, 145, 234).
Aa
Black text reads best on this color (6.26:1).
About this color
#1091EA is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.166 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.025 away. Black text reads best on it, at 6.26:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.26:1 |
| White text | 3.35:1 |
Values
| HEX | #1091EA |
| RGB | rgb(16, 145, 234) |
| HSL | hsl(204, 87%, 49%) |
| OKLCH | oklch(63.9% 0.166 247.4) |
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 #1091EA | 3.35:1 | AA large text | Lc -65.8 | Content text, not long reading |
| Black text on #1091EA | 6.26:1 | AA | Lc 43.7 | Non-text elements, placeholder text |
| #1091EA text on white | 3.35:1 | AA large text | Lc 60.3 | Content text, not long reading |
| #1091EA text on black | 6.26:1 | AA | Lc -41.4 | 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
#97C6F3
oklch(80.9% 0.081 247.8)
-
Step 400
400
#57A7ED
oklch(70.8% 0.13 247.2)
-
Step 500
500 (this color)
#1091EA
oklch(63.9% 0.166 247.4)
-
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)
#1091EA 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) | #6596EE | 0.059 |
| Deuteranopia (no green cones) | #4484E8 | 0.038 |
| Tritanopia (no blue cones) | #00A7B2 | 0.118 |
| Achromatopsia (no color) | #8C8C8C | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1091EA
#1091EA
oklch(63.9% 0.166 247.4)
- #C37800
#C37800
oklch(63.8% 0.141 67.3)
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 #1091EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.025
- Chefchaouen Blue #4895EF ΔE 0.032
- Dodger Blue #1E90FF ΔE 0.033
- Water Blue #0E87CC ΔE 0.050
- Soft Blue #6488EA ΔE 0.056
- Cornflower Blue #6495ED ΔE 0.057
- Clear Blue #247AFD ΔE 0.069
- Cool Blue #4984B8 ΔE 0.078
Use #1091EA 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.