#239CD8
Closest named color: Dark Sky Blue (#448EE4). oklch(65.7% 0.134 236.8), rgb(35, 156, 216).
Aa
Black text reads best on this color (6.81:1).
About this color
#239CD8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.134 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.048 away. Black text reads best on it, at 6.81:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.81:1 |
| White text | 3.07:1 |
Values
| HEX | #239CD8 |
| RGB | rgb(35, 156, 216) |
| HSL | hsl(200, 72%, 49%) |
| OKLCH | oklch(65.7% 0.134 236.8) |
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 #239CD8 | 3.07:1 | AA large text | Lc -62.6 | Content text, not long reading |
| Black text on #239CD8 | 6.81:1 | AA | Lc 46.8 | Large or bold text, headings |
| #239CD8 text on white | 3.07:1 | AA large text | Lc 57.2 | Large or bold text, headings |
| #239CD8 text on black | 6.81:1 | AA | Lc -44.5 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C4DDEE
oklch(88.4% 0.036 237.6)
-
Step 300
300
#99C8E6
oklch(81% 0.065 236.6)
-
Step 400
400
#5BAAD9
oklch(70.7% 0.104 236.9)
-
Step 500
500 (this color)
#239CD8
oklch(65.7% 0.134 236.8)
-
Step 600
600
#007CB1
oklch(55.6% 0.122 237.2)
-
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
#042A3E
oklch(27.1% 0.055 237.2)
#239CD8 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) | #7F9CDB | 0.076 |
| Deuteranopia (no green cones) | #678CD7 | 0.061 |
| Tritanopia (no blue cones) | #00ABB1 | 0.083 |
| Achromatopsia (no color) | #939393 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #239CD8
#239CD8
oklch(65.7% 0.134 236.8)
- #CE7A34
#CE7A34
oklch(65.9% 0.133 56.9)
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 #239CD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.048
- Chefchaouen Blue #4895EF ΔE 0.048
- Water Blue #0E87CC ΔE 0.061
- Cornflower Blue #6495ED ΔE 0.061
- Faded Blue #658CBB ΔE 0.065
- Blue NCS #118AB2 ΔE 0.071
- Cool Blue #4984B8 ΔE 0.072
- Dodger Blue #1E90FF ΔE 0.073
Use #239CD8 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.