#338CEE
Closest named color: Dark Sky Blue (#448EE4). oklch(63.7% 0.169 253.8), rgb(51, 140, 238).
Aa
Black text reads best on this color (6.12:1).
About this color
#338CEE is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.169 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.020 away. Black text reads best on it, at 6.12:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.12:1 |
| White text | 3.42:1 |
Values
| HEX | #338CEE |
| RGB | rgb(51, 140, 238) |
| HSL | hsl(211, 85%, 57%) |
| OKLCH | oklch(63.7% 0.169 253.8) |
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 #338CEE | 3.42:1 | AA large text | Lc -66.8 | Content text, not long reading |
| Black text on #338CEE | 6.12:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #338CEE text on white | 3.42:1 | AA large text | Lc 61.3 | Content text, not long reading |
| #338CEE text on black | 6.12:1 | AA | Lc -40.4 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9CC4F5
oklch(80.9% 0.082 253.8)
-
Step 400
400
#63A4F1
oklch(70.8% 0.132 253.7)
-
Step 500
500 (this color)
#338CEE
oklch(63.7% 0.169 253.8)
-
Step 600
600
#0072D6
oklch(55.6% 0.176 253.8)
-
Step 700
700
#0060B5
oklch(49.2% 0.155 253.6)
-
Step 800
800
#004E96
oklch(42.7% 0.135 253.8)
-
Step 900
900
#0A417A
oklch(37.6% 0.111 254)
-
Step 950
950
#092747
oklch(27% 0.069 253.1)
#338CEE 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) | #5C94F2 | 0.042 |
| Deuteranopia (no green cones) | #3A83EC | 0.023 |
| Tritanopia (no blue cones) | #00A3B1 | 0.127 |
| Achromatopsia (no color) | #8B8B8B | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #338CEE
#338CEE
oklch(63.7% 0.169 253.8)
- #BB7C00
#BB7C00
oklch(63.6% 0.135 73.6)
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 #338CEE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.020
- Dodger Blue #1E90FF ΔE 0.026
- Chefchaouen Blue #4895EF ΔE 0.030
- Soft Blue #6488EA ΔE 0.041
- Cornflower Blue #6495ED ΔE 0.051
- Clear Blue #247AFD ΔE 0.056
- Water Blue #0E87CC ΔE 0.056
- Cornflower #6A79F7 ΔE 0.067
Use #338CEE 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.