#3A5197
Closest named color: Dusk Blue (#26538D). oklch(45.3% 0.117 267.8), rgb(58, 81, 151).
Aa
White text reads best on this color (7.48:1).
About this color
#3A5197 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.117 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.028 away. White text reads best on it, at 7.48:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.80:1 |
| White text | 7.48:1 |
Values
| HEX | #3A5197 |
| RGB | rgb(58, 81, 151) |
| HSL | hsl(225, 44%, 41%) |
| OKLCH | oklch(45.3% 0.117 267.8) |
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 #3A5197 | 7.48:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #3A5197 | 2.80:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #3A5197 text on white | 7.48:1 | AAA | Lc 85.8 | Fine for body text |
| #3A5197 text on black | 2.80:1 | Fails | Lc -16.2 | Dividers and decoration only |
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 800.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F3
oklch(88.5% 0.038 267.3)
-
Step 300
300
#ADC0EE
oklch(80.9% 0.069 267.3)
-
Step 400
400
#839EE6
oklch(70.8% 0.11 267.8)
-
Step 500
500
#6584DE
oklch(63.1% 0.14 267.9)
-
Step 600
600
#4D6CCC
oklch(55.7% 0.152 267.8)
-
Step 700
700
#3E59B0
oklch(49% 0.142 267.9)
-
Step 800
800 (this color)
#3A5197
oklch(45.3% 0.117 267.8)
-
Step 900
900
#2D3E72
oklch(37.7% 0.092 268.2)
-
Step 950
950
#1A2543
oklch(27.1% 0.058 267.3)
#3A5197 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) | #30599A | 0.023 |
| Deuteranopia (no green cones) | #225196 | 0.025 |
| Tritanopia (no blue cones) | #00616C | 0.103 |
| Achromatopsia (no color) | #555555 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A5197
#3A5197
oklch(45.3% 0.117 267.8)
- #6C5200
#6C5200
oklch(45.3% 0.093 87.4)
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 #3A5197, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.031
- Twilight #4E518B ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.041
- Blueberry #464196 ΔE 0.043
- Cobalt #1E488F ΔE 0.044
- Dusky Blue #475F94 ΔE 0.047
- Dusk #4E5481 ΔE 0.047
Use #3A5197 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.