#1D8AEB
Closest named color: Dark Sky Blue (#448EE4). oklch(62.6% 0.172 251.3), rgb(29, 138, 235).
Aa
Black text reads best on this color (5.88:1).
About this color
#1D8AEB is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.172 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.028 away. Black text reads best on it, at 5.88:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.88:1 |
| White text | 3.56:1 |
Values
| HEX | #1D8AEB |
| RGB | rgb(29, 138, 235) |
| HSL | hsl(208, 84%, 52%) |
| OKLCH | oklch(62.6% 0.172 251.3) |
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 #1D8AEB | 3.56:1 | AA large text | Lc -68.2 | Content text, not long reading |
| Black text on #1D8AEB | 5.88:1 | AA | Lc 41.4 | Non-text elements, placeholder text |
| #1D8AEB text on white | 3.56:1 | AA large text | Lc 62.7 | Content text, not long reading |
| #1D8AEB text on black | 5.88:1 | AA | Lc -39.0 | 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
#DEEBFA
oklch(93.5% 0.025 251.9)
-
Step 200
200
#C3DCF8
oklch(88.5% 0.047 251.3)
-
Step 300
300
#98C5F6
oklch(80.9% 0.085 251)
-
Step 400
400
#5CA5F1
oklch(70.7% 0.134 251.1)
-
Step 500
500 (this color)
#1D8AEB
oklch(62.6% 0.172 251.3)
-
Step 600
600
#0075CE
oklch(55.7% 0.162 251.1)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#00427A
oklch(37.7% 0.112 251.7)
-
Step 950
950
#052748
oklch(27% 0.072 251.7)
#1D8AEB 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) | #5991EF | 0.048 |
| Deuteranopia (no green cones) | #347FE9 | 0.029 |
| Tritanopia (no blue cones) | #00A1AF | 0.125 |
| Achromatopsia (no color) | #888888 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D8AEB
#1D8AEB
oklch(62.6% 0.172 251.3)
- #BA7800
#BA7800
oklch(62.7% 0.135 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 #1D8AEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.028
- Dodger Blue #1E90FF ΔE 0.032
- Chefchaouen Blue #4895EF ΔE 0.042
- Water Blue #0E87CC ΔE 0.048
- Clear Blue #247AFD ΔE 0.052
- Soft Blue #6488EA ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.064
- Cornflower #6A79F7 ΔE 0.074
Use #1D8AEB 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.