#33A4ED
Closest named color: Chefchaouen Blue (#4895EF). oklch(69% 0.145 242.3), rgb(51, 164, 237).
Aa
Black text reads best on this color (7.67:1).
About this color
#33A4ED is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.145 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.041 away. Black text reads best on it, at 7.67:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.67:1 |
| White text | 2.73:1 |
Values
| HEX | #33A4ED |
| RGB | rgb(51, 164, 237) |
| HSL | hsl(204, 84%, 56%) |
| OKLCH | oklch(69% 0.145 242.3) |
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 #33A4ED | 2.73:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #33A4ED | 7.67:1 | AAA | Lc 51.5 | Large or bold text, headings |
| #33A4ED text on white | 2.73:1 | Fails | Lc 52.5 | Large or bold text, headings |
| #33A4ED text on black | 7.67:1 | AAA | Lc -49.4 | 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
#EFF7FD
oklch(97.2% 0.012 239.9)
-
Step 100
100
#DBECFA
oklch(93.5% 0.026 242.7)
-
Step 200
200
#BDDEF8
oklch(88.5% 0.05 241.9)
-
Step 300
300
#8CC8F7
oklch(80.9% 0.091 242.8)
-
Step 400
400 (this color)
#33A4ED
oklch(69% 0.145 242.3)
-
Step 500
500
#0091DC
oklch(63% 0.151 242.6)
-
Step 600
600
#007ABA
oklch(55.6% 0.133 242.5)
-
Step 700
700
#00679D
oklch(49.2% 0.117 242)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#00466D
oklch(37.8% 0.09 242.2)
-
Step 950
950
#002943
oklch(27% 0.065 242.6)
#33A4ED 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) | #82A6F0 | 0.069 |
| Deuteranopia (no green cones) | #6895EC | 0.052 |
| Tritanopia (no blue cones) | #00B6BE | 0.099 |
| Achromatopsia (no color) | #9C9C9C | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33A4ED
#33A4ED
oklch(69% 0.145 242.3)
- #DA8426
#DA8426
oklch(69.1% 0.146 62.2)
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 #33A4ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.041
- Cornflower Blue #6495ED ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.058
- Dodger Blue #1E90FF ΔE 0.066
- Deep Sky Blue #00BFFF ΔE 0.072
- Soft Blue #6488EA ΔE 0.077
- Turquoise Blue #06B1C4 ΔE 0.081
- Faded Blue #658CBB ΔE 0.089
Use #33A4ED 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.