#3A57A5
Closest named color: Denim Blue (#3B5B92). oklch(47.6% 0.13 266.2), rgb(58, 87, 165).
Aa
White text reads best on this color (6.80:1).
About this color
#3A57A5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.130 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.035 away. White text reads best on it, at 6.80:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.08:1 |
| White text | 6.80:1 |
Values
| HEX | #3A57A5 |
| RGB | rgb(58, 87, 165) |
| HSL | hsl(224, 48%, 44%) |
| OKLCH | oklch(47.6% 0.13 266.2) |
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 #3A57A5 | 6.80:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #3A57A5 | 3.08:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #3A57A5 text on white | 6.80:1 | AA | Lc 83.2 | Fine for body text |
| #3A57A5 text on black | 3.08:1 | AA large text | Lc -18.7 | 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 700.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#AEC0EA
oklch(80.8% 0.063 266.8)
-
Step 400
400
#839FE0
oklch(70.7% 0.101 266)
-
Step 500
500
#6586D7
oklch(63.1% 0.128 266.1)
-
Step 600
600
#4D6EC5
oklch(55.7% 0.14 266.3)
-
Step 700
700 (this color)
#3A57A5
oklch(47.6% 0.13 266.2)
-
Step 800
800
#334B8A
oklch(42.7% 0.108 266.2)
-
Step 900
900
#2D3F6E
oklch(37.7% 0.084 266.6)
-
Step 950
950
#1A2540
oklch(26.9% 0.053 266.2)
#3A57A5 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) | #3060A8 | 0.025 |
| Deuteranopia (no green cones) | #1C56A3 | 0.028 |
| Tritanopia (no blue cones) | #006976 | 0.109 |
| Achromatopsia (no color) | #5B5B5B | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A57A5
#3A57A5
oklch(47.6% 0.13 266.2)
- #755800
#755800
oklch(47.7% 0.098 86.3)
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 #3A57A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.035
- Dusky Blue #475F94 ΔE 0.043
- Dusk Blue #26538D ΔE 0.046
- Twilight #4E518B ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.052
- Mid Blue #276AB3 ΔE 0.053
- French Blue #436BAD ΔE 0.058
- Denim #3B638C ΔE 0.059
Use #3A57A5 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.