#25AAF4
Closest named color: Chefchaouen Blue (#4895EF). oklch(70.5% 0.152 240.1), rgb(37, 170, 244).
Aa
Black text reads best on this color (8.13:1).
About this color
#25AAF4 is a medium-light, vivid blue. In OKLCH its lightness is 70%, its chroma 0.152 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.055 away. Black text reads best on it, at 8.13:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 8.13:1 |
| White text | 2.58:1 |
Values
| HEX | #25AAF4 |
| RGB | rgb(37, 170, 244) |
| HSL | hsl(201, 90%, 55%) |
| OKLCH | oklch(70.5% 0.152 240.1) |
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 #25AAF4 | 2.58:1 | Fails | Lc -55.1 | Large or bold text, headings |
| Black text on #25AAF4 | 8.13:1 | AAA | Lc 54.1 | Large or bold text, headings |
| #25AAF4 text on white | 2.58:1 | Fails | Lc 49.9 | Large or bold text, headings |
| #25AAF4 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
#EEF7FD
oklch(97.1% 0.013 236.6)
-
Step 100
100
#DAEDFB
oklch(93.6% 0.028 239.7)
-
Step 200
200
#BBDFF9
oklch(88.6% 0.052 239.6)
-
Step 300
300
#86C9F8
oklch(80.8% 0.095 240.1)
-
Step 400
400 (this color)
#25AAF4
oklch(70.5% 0.152 240.1)
-
Step 500
500
#0092D7
oklch(63% 0.145 240.3)
-
Step 600
600
#007BB6
oklch(55.6% 0.128 240.2)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#00547F
oklch(42.6% 0.099 240.7)
-
Step 900
900
#00466A
oklch(37.6% 0.086 240.1)
-
Step 950
950
#002A41
oklch(27.1% 0.061 239)
#25AAF4 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) | #87ABF7 | 0.077 |
| Deuteranopia (no green cones) | #6B99F3 | 0.060 |
| Tritanopia (no blue cones) | #00BDC4 | 0.101 |
| Achromatopsia (no color) | #A1A1A1 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25AAF4
#25AAF4
oklch(70.5% 0.152 240.1)
- #E38626
#E38626
oklch(70.5% 0.152 60.4)
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 #25AAF4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.055
- Deep Sky Blue #00BFFF ΔE 0.056
- Cornflower Blue #6495ED ΔE 0.063
- Dark Sky Blue #448EE4 ΔE 0.074
- Dodger Blue #1E90FF ΔE 0.076
- Turquoise Blue #06B1C4 ΔE 0.081
- Bright Sky Blue #02CCFE ΔE 0.091
- Soft Blue #6488EA ΔE 0.092
Use #25AAF4 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.