#1D88EC
Closest named color: Dark Sky Blue (#448EE4). oklch(62.2% 0.176 252.3), rgb(29, 136, 236).
Aa
Black text reads best on this color (5.78:1).
About this color
#1D88EC is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.176 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.033 away. Black text reads best on it, at 5.78:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.78:1 |
| White text | 3.62:1 |
Values
| HEX | #1D88EC |
| RGB | rgb(29, 136, 236) |
| HSL | hsl(209, 84%, 52%) |
| OKLCH | oklch(62.2% 0.176 252.3) |
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 #1D88EC | 3.62:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #1D88EC | 5.78:1 | AA | Lc 40.8 | Non-text elements, placeholder text |
| #1D88EC text on white | 3.62:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #1D88EC text on black | 5.78:1 | AA | Lc -38.4 | 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
#DEEBFB
oklch(93.5% 0.026 253.6)
-
Step 200
200
#C3DCF9
oklch(88.5% 0.048 252.2)
-
Step 300
300
#99C5F7
oklch(81% 0.085 252.1)
-
Step 400
400
#5CA4F3
oklch(70.6% 0.137 252.3)
-
Step 500
500 (this color)
#1D88EC
oklch(62.2% 0.176 252.3)
-
Step 600
600
#0074D1
oklch(55.7% 0.167 252.1)
-
Step 700
700
#0061B1
oklch(49.1% 0.148 252.3)
-
Step 800
800
#004F92
oklch(42.6% 0.129 252.3)
-
Step 900
900
#00427B
oklch(37.7% 0.113 252.1)
-
Step 950
950
#062748
oklch(27% 0.072 252.2)
#1D88EC 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) | #5490F0 | 0.046 |
| Deuteranopia (no green cones) | #2C7EEA | 0.025 |
| Tritanopia (no blue cones) | #00A0AE | 0.130 |
| Achromatopsia (no color) | #868686 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D88EC
#1D88EC
oklch(62.2% 0.176 252.3)
- #B77700
#B77700
oklch(62.1% 0.133 72)
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 #1D88EC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.033
- Dodger Blue #1E90FF ΔE 0.033
- Clear Blue #247AFD ΔE 0.046
- Chefchaouen Blue #4895EF ΔE 0.047
- Water Blue #0E87CC ΔE 0.050
- Soft Blue #6488EA ΔE 0.053
- Cornflower Blue #6495ED ΔE 0.067
- Cerulean Blue #056EEE ΔE 0.069
Use #1D88EC 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.