#3597F6
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.6% 0.167 251.4), rgb(53, 151, 246).
Aa
Black text reads best on this color (6.90:1).
About this color
#3597F6 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.167 and its hue 251°. 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 6.90:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.90:1 |
| White text | 3.03:1 |
Values
| HEX | #3597F6 |
| RGB | rgb(53, 151, 246) |
| HSL | hsl(210, 91%, 59%) |
| OKLCH | oklch(66.6% 0.167 251.4) |
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 #3597F6 | 3.03:1 | AA large text | Lc -62.1 | Content text, not long reading |
| Black text on #3597F6 | 6.90:1 | AA | Lc 47.3 | Large or bold text, headings |
| #3597F6 text on white | 3.03:1 | AA large text | Lc 56.7 | Large or bold text, headings |
| #3597F6 text on black | 6.90:1 | AA | Lc -45.0 | 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 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
#C4DCF7
oklch(88.5% 0.045 251.4)
-
Step 300
300
#9AC5F4
oklch(81% 0.081 251.1)
-
Step 400
400
#5FA5EF
oklch(70.8% 0.13 251.3)
-
Step 500
500 (this color)
#3597F6
oklch(66.6% 0.167 251.4)
-
Step 600
600
#0074CE
oklch(55.5% 0.163 251.5)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#024279
oklch(37.6% 0.11 251.7)
-
Step 950
950
#072747
oklch(26.9% 0.07 252)
#3597F6 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) | #699DFA | 0.048 |
| Deuteranopia (no green cones) | #4A8CF4 | 0.029 |
| Tritanopia (no blue cones) | #00AEBB | 0.124 |
| Achromatopsia (no color) | #949494 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3597F6
#3597F6
oklch(66.6% 0.167 251.4)
- #CA8300
#CA8300
oklch(66.7% 0.143 71.5)
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 #3597F6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.015
- Dodger Blue #1E90FF ΔE 0.028
- Dark Sky Blue #448EE4 ΔE 0.032
- Cornflower Blue #6495ED ΔE 0.038
- Soft Blue #6488EA ΔE 0.050
- Water Blue #0E87CC ΔE 0.076
- Clear Blue #247AFD ΔE 0.080
- Cornflower #6A79F7 ΔE 0.083
Use #3597F6 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.