#24B3EF
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.3% 0.141 233), rgb(36, 179, 239).
Aa
Black text reads best on this color (8.76:1).
About this color
#24B3EF is a medium-light, vivid blue. In OKLCH its lightness is 72%, its chroma 0.141 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.035 away. Black text reads best on it, at 8.76:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.76:1 |
| White text | 2.39:1 |
Values
| HEX | #24B3EF |
| RGB | rgb(36, 179, 239) |
| HSL | hsl(198, 86%, 54%) |
| OKLCH | oklch(72.3% 0.141 233) |
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 #24B3EF | 2.39:1 | Fails | Lc -51.6 | Large or bold text, headings |
| Black text on #24B3EF | 8.76:1 | AAA | Lc 57.3 | Large or bold text, headings |
| #24B3EF text on white | 2.39:1 | Fails | Lc 46.7 | Large or bold text, headings |
| #24B3EF text on black | 8.76:1 | AAA | Lc -55.4 | 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
#EEF7FC
oklch(97.1% 0.012 231.7)
-
Step 100
100
#DAEDF8
oklch(93.5% 0.025 233)
-
Step 200
200
#BADFF5
oklch(88.4% 0.049 234.2)
-
Step 300
300
#85CBF1
oklch(81% 0.089 233.1)
-
Step 400
400 (this color)
#24B3EF
oklch(72.3% 0.141 233)
-
Step 500
500
#0095CB
oklch(63% 0.131 233.2)
-
Step 600
600
#007DAB
oklch(55.5% 0.115 233.2)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900
#004864
oklch(37.8% 0.078 232.8)
-
Step 950
950
#002A3D
oklch(26.9% 0.056 233.8)
#24B3EF 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) | #95B1F2 | 0.090 |
| Deuteranopia (no green cones) | #7B9FEE | 0.076 |
| Tritanopia (no blue cones) | #00C3C7 | 0.085 |
| Achromatopsia (no color) | #A7A7A7 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #24B3EF
#24B3EF
oklch(72.3% 0.141 233)
- #E98A48
#E98A48
oklch(72.3% 0.141 53.2)
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 #24B3EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.035
- Turquoise Blue #06B1C4 ΔE 0.065
- Bright Sky Blue #02CCFE ΔE 0.067
- Vivid Sky Blue #4CC9F0 ΔE 0.068
- Chefchaouen Blue #4895EF ΔE 0.081
- Carolina Blue #8AB8FE ΔE 0.083
- Cornflower Blue #6495ED ΔE 0.084
- Lightblue #7BC8F6 ΔE 0.088
Use #24B3EF 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.