#3594EB
Closest named color: Chefchaouen Blue (#4895EF). oklch(65.3% 0.157 250.1), rgb(53, 148, 235).
Aa
Black text reads best on this color (6.58:1).
About this color
#3594EB is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.157 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.015 away. Black text reads best on it, at 6.58:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.58:1 |
| White text | 3.18:1 |
Values
| HEX | #3594EB |
| RGB | rgb(53, 148, 235) |
| HSL | hsl(209, 82%, 56%) |
| OKLCH | oklch(65.3% 0.157 250.1) |
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 #3594EB | 3.18:1 | AA large text | Lc -64.0 | Content text, not long reading |
| Black text on #3594EB | 6.58:1 | AA | Lc 45.4 | Large or bold text, headings |
| #3594EB text on white | 3.18:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #3594EB text on black | 6.58:1 | AA | Lc -43.1 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFEBF9
oklch(93.5% 0.023 252.2)
-
Step 200
200
#C5DCF5
oklch(88.5% 0.042 250.5)
-
Step 300
300
#9BC5F1
oklch(80.9% 0.077 250)
-
Step 400
400
#61A5EA
oklch(70.6% 0.123 250.3)
-
Step 500
500 (this color)
#3594EB
oklch(65.3% 0.157 250.1)
-
Step 600
600
#0076CB
oklch(55.7% 0.158 250)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#00518E
oklch(42.8% 0.121 249.9)
-
Step 900
900
#064375
oklch(37.7% 0.102 250.1)
-
Step 950
950
#082844
oklch(27% 0.064 249)
#3594EB 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) | #6B99EF | 0.050 |
| Deuteranopia (no green cones) | #4F89E9 | 0.031 |
| Tritanopia (no blue cones) | #00A9B4 | 0.116 |
| Achromatopsia (no color) | #909090 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3594EB
#3594EB
oklch(65.3% 0.157 250.1)
- #C67E00
#C67E00
oklch(65.3% 0.142 70)
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 #3594EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.015
- Dark Sky Blue #448EE4 ΔE 0.018
- Dodger Blue #1E90FF ΔE 0.035
- Cornflower Blue #6495ED ΔE 0.039
- Soft Blue #6488EA ΔE 0.046
- Water Blue #0E87CC ΔE 0.060
- Faded Blue #658CBB ΔE 0.077
- Clear Blue #247AFD ΔE 0.078
Use #3594EB 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.