#23ACE8
Closest named color: Deep Sky Blue (#00BFFF). oklch(70.3% 0.139 234), rgb(35, 172, 232).
Aa
Black text reads best on this color (8.13:1).
About this color
#23ACE8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.139 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.055 away. Black text reads best on it, at 8.13:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.13:1 |
| White text | 2.58:1 |
Values
| HEX | #23ACE8 |
| RGB | rgb(35, 172, 232) |
| HSL | hsl(198, 81%, 52%) |
| OKLCH | oklch(70.3% 0.139 234) |
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 #23ACE8 | 2.58:1 | Fails | Lc -55.1 | Large or bold text, headings |
| Black text on #23ACE8 | 8.13:1 | AAA | Lc 54.1 | Large or bold text, headings |
| #23ACE8 text on white | 2.58:1 | Fails | Lc 49.9 | Large or bold text, headings |
| #23ACE8 text on black | 8.13:1 | AAA | Lc -52.0 | 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
#EEF7FC
oklch(97.1% 0.012 231.7)
-
Step 100
100
#DAEDF8
oklch(93.5% 0.025 233)
-
Step 200
200
#BBDFF5
oklch(88.5% 0.049 234.9)
-
Step 300
300
#87CAF0
oklch(80.8% 0.087 234.2)
-
Step 400
400 (this color)
#23ACE8
oklch(70.3% 0.139 234)
-
Step 500
500
#0095CD
oklch(63.1% 0.132 234.2)
-
Step 600
600
#007DAD
oklch(55.6% 0.117 234.3)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004865
oklch(37.8% 0.079 233.7)
-
Step 950
950
#002A3E
oklch(26.9% 0.057 235.2)
#23ACE8 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) | #8EABEB | 0.086 |
| Deuteranopia (no green cones) | #7599E7 | 0.072 |
| Tritanopia (no blue cones) | #00BCC1 | 0.084 |
| Achromatopsia (no color) | #A1A1A1 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23ACE8
#23ACE8
oklch(70.3% 0.139 234)
- #E18542
#E18542
oklch(70.3% 0.139 54.1)
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 #23ACE8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.055
- Turquoise Blue #06B1C4 ΔE 0.061
- Chefchaouen Blue #4895EF ΔE 0.066
- Cornflower Blue #6495ED ΔE 0.072
- Dark Sky Blue #448EE4 ΔE 0.080
- Vivid Sky Blue #4CC9F0 ΔE 0.086
- Bright Sky Blue #02CCFE ΔE 0.087
- Greyblue #77A1B5 ΔE 0.087
Use #23ACE8 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.