#4AB9FB
Closest named color: Deep Sky Blue (#00BFFF). oklch(75% 0.138 238.8), rgb(74, 185, 251).
Aa
Black text reads best on this color (9.62:1).
About this color
#4AB9FB is a medium-light, moderately saturated blue. In OKLCH its lightness is 75%, its chroma 0.138 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.024 away. Black text reads best on it, at 9.62:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.62:1 |
| White text | 2.18:1 |
Values
| HEX | #4AB9FB |
| RGB | rgb(74, 185, 251) |
| HSL | hsl(202, 96%, 64%) |
| OKLCH | oklch(75% 0.138 238.8) |
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 #4AB9FB | 2.18:1 | Fails | Lc -47.3 | Large or bold text, headings |
| Black text on #4AB9FB | 9.62:1 | AAA | Lc 61.4 | Content text, not long reading |
| #4AB9FB text on white | 2.18:1 | Fails | Lc 42.6 | Non-text elements, placeholder text |
| #4AB9FB text on black | 9.62:1 | AAA | Lc -59.6 | 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
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DBEDF9
oklch(93.6% 0.025 236.8)
-
Step 200
200
#BDDEF6
oklch(88.4% 0.048 239.7)
-
Step 300
300
#8CC9F2
oklch(80.9% 0.085 238.6)
-
Step 400
400 (this color)
#4AB9FB
oklch(75% 0.138 238.8)
-
Step 500
500
#0093D5
oklch(63.1% 0.142 238.9)
-
Step 600
600
#007CB4
oklch(55.7% 0.125 238.6)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#004769
oklch(37.8% 0.084 238.3)
-
Step 950
950
#002A40
oklch(27% 0.06 237.8)
#4AB9FB 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) | #9AB9FE | 0.075 |
| Deuteranopia (no green cones) | #82A8FA | 0.061 |
| Tritanopia (no blue cones) | #00CAD0 | 0.093 |
| Achromatopsia (no color) | #AFAFAF | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4AB9FB
#4AB9FB
oklch(75% 0.138 238.8)
- #EE974C
#EE974C
oklch(75.2% 0.138 59)
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 #4AB9FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.024
- Vivid Sky Blue #4CC9F0 ΔE 0.051
- Bright Sky Blue #02CCFE ΔE 0.052
- Carolina Blue #8AB8FE ΔE 0.057
- Lightblue #7BC8F6 ΔE 0.062
- Sky #82CAFC ΔE 0.070
- Light Sky Blue #87CEFA ΔE 0.083
- Pastel Blue #A2BFFE ΔE 0.088
Use #4AB9FB 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.