#1EB3F9
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.7% 0.152 236.7), rgb(30, 179, 249).
Aa
Black text reads best on this color (8.87:1).
About this color
#1EB3F9 is a medium-light, vivid blue. In OKLCH its lightness is 73%, its chroma 0.152 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.032 away. Black text reads best on it, at 8.87:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.87:1 |
| White text | 2.36:1 |
Values
| HEX | #1EB3F9 |
| RGB | rgb(30, 179, 249) |
| HSL | hsl(199, 95%, 55%) |
| OKLCH | oklch(72.7% 0.152 236.7) |
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 #1EB3F9 | 2.36:1 | Fails | Lc -51.0 | Large or bold text, headings |
| Black text on #1EB3F9 | 8.87:1 | AAA | Lc 57.9 | Large or bold text, headings |
| #1EB3F9 text on white | 2.36:1 | Fails | Lc 46.1 | Large or bold text, headings |
| #1EB3F9 text on black | 8.87:1 | AAA | Lc -56.0 | Large or bold text, headings |
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 400.
-
Step 50
50
#EEF7FD
oklch(97.1% 0.013 236.6)
-
Step 100
100
#D9EDFA
oklch(93.5% 0.028 236.2)
-
Step 200
200
#B9DFF8
oklch(88.5% 0.053 237)
-
Step 300
300
#83CAF6
oklch(80.8% 0.095 236.8)
-
Step 400
400 (this color)
#1EB3F9
oklch(72.7% 0.152 236.7)
-
Step 500
500
#0094D1
oklch(63.1% 0.137 236.6)
-
Step 600
600
#007CB0
oklch(55.5% 0.121 236.7)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#004767
oklch(37.7% 0.082 236.6)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#1EB3F9 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) | #91B3FC | 0.086 |
| Deuteranopia (no green cones) | #75A0F8 | 0.070 |
| Tritanopia (no blue cones) | #00C5CB | 0.096 |
| Achromatopsia (no color) | #A8A8A8 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1EB3F9
#1EB3F9
oklch(72.7% 0.152 236.7)
- #ED8B37
#ED8B37
oklch(72.8% 0.152 57)
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 #1EB3F9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.032
- Bright Sky Blue #02CCFE ΔE 0.068
- Vivid Sky Blue #4CC9F0 ΔE 0.072
- Chefchaouen Blue #4895EF ΔE 0.078
- Turquoise Blue #06B1C4 ΔE 0.080
- Carolina Blue #8AB8FE ΔE 0.081
- Cornflower Blue #6495ED ΔE 0.082
- Lightblue #7BC8F6 ΔE 0.090
Use #1EB3F9 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.