#3591C2
Closest named color: Blue NCS (#118AB2). oklch(62.4% 0.113 236.1), rgb(53, 145, 194).
Aa
Black text reads best on this color (5.98:1).
About this color
#3591C2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.113 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.036 away. Black text reads best on it, at 5.98:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.98:1 |
| White text | 3.51:1 |
Values
| HEX | #3591C2 |
| RGB | rgb(53, 145, 194) |
| HSL | hsl(201, 57%, 48%) |
| OKLCH | oklch(62.4% 0.113 236.1) |
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 #3591C2 | 3.51:1 | AA large text | Lc -67.8 | Content text, not long reading |
| Black text on #3591C2 | 5.98:1 | AA | Lc 41.7 | Non-text elements, placeholder text |
| #3591C2 text on white | 3.51:1 | AA large text | Lc 62.4 | Content text, not long reading |
| #3591C2 text on black | 5.98:1 | AA | Lc -39.3 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C7DDEB
oklch(88.6% 0.03 235.7)
-
Step 300
300
#9FC7E0
oklch(80.9% 0.055 235.8)
-
Step 400
400
#68A9D0
oklch(70.6% 0.088 236.2)
-
Step 500
500 (this color)
#3591C2
oklch(62.4% 0.113 236.1)
-
Step 600
600
#007CB0
oklch(55.5% 0.121 236.7)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#0F4763
oklch(37.7% 0.073 235.9)
-
Step 950
950
#0C2A3A
oklch(27.1% 0.046 235.5)
#3591C2 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) | #7A90C4 | 0.067 |
| Deuteranopia (no green cones) | #6683C1 | 0.054 |
| Tritanopia (no blue cones) | #009EA2 | 0.073 |
| Achromatopsia (no color) | #898989 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3591C2
#3591C2
oklch(62.4% 0.113 236.1)
- #BA743E
#BA743E
oklch(62.4% 0.112 56.4)
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 #3591C2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.037
- Water Blue #0E87CC ΔE 0.041
- Faded Blue #658CBB ΔE 0.042
- Steel Blue #4682B4 ΔE 0.042
- Dusty Blue #5A86AD ΔE 0.044
- Off Blue #5684AE ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.057
Use #3591C2 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.