#33A5FF
Closest named color: Chefchaouen Blue (#4895EF). oklch(70.2% 0.165 247.4), rgb(51, 165, 255).
Aa
Black text reads best on this color (7.96:1).
About this color
#33A5FF is a medium-light, vivid blue. In OKLCH its lightness is 70%, its chroma 0.165 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.044 away. Black text reads best on it, at 7.96:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.96:1 |
| White text | 2.63:1 |
Values
| HEX | #33A5FF |
| RGB | rgb(51, 165, 255) |
| HSL | hsl(206, 100%, 60%) |
| OKLCH | oklch(70.2% 0.165 247.4) |
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 #33A5FF | 2.63:1 | Fails | Lc -56.0 | Large or bold text, headings |
| Black text on #33A5FF | 7.96:1 | AAA | Lc 53.1 | Large or bold text, headings |
| #33A5FF text on white | 2.63:1 | Fails | Lc 50.9 | Large or bold text, headings |
| #33A5FF text on black | 7.96:1 | AAA | Lc -51.0 | 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
#EEF7FF
oklch(97.2% 0.014 244.7)
-
Step 100
100
#DBECFD
oklch(93.6% 0.029 248.1)
-
Step 200
200
#BCDDFE
oklch(88.4% 0.058 248.5)
-
Step 300
300
#8AC7FF
oklch(80.9% 0.101 247.1)
-
Step 400
400 (this color)
#33A5FF
oklch(70.2% 0.165 247.4)
-
Step 500
500
#008EE8
oklch(63% 0.168 247.5)
-
Step 600
600
#0077C4
oklch(55.5% 0.148 247.6)
-
Step 700
700
#0064A6
oklch(49.1% 0.131 247.6)
-
Step 800
800
#005289
oklch(42.7% 0.113 247.3)
-
Step 900
900
#004473
oklch(37.7% 0.1 247.4)
-
Step 950
950
#002847
oklch(27% 0.072 247.4)
#33A5FF 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) | #7AA9FF | 0.060 |
| Deuteranopia (no green cones) | #5C97FD | 0.042 |
| Tritanopia (no blue cones) | #00BBC6 | 0.119 |
| Achromatopsia (no color) | #9F9F9F | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33A5FF
#33A5FF
oklch(70.2% 0.165 247.4)
- #DD8900
#DD8900
oklch(70.2% 0.155 67.5)
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 #33A5FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.044
- Cornflower Blue #6495ED ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.066
- Deep Sky Blue #00BFFF ΔE 0.070
- Soft Blue #6488EA ΔE 0.079
- Periwinkle Blue #8F99FB ΔE 0.085
- Carolina Blue #8AB8FE ΔE 0.096
Use #33A5FF 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.