#3D57AB
Closest named color: Denim Blue (#3B5B92). oklch(48.2% 0.138 268), rgb(61, 87, 171).
Aa
White text reads best on this color (6.66:1).
About this color
#3D57AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.138 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.044 away. White text reads best on it, at 6.66:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.14:1 |
| White text | 6.66:1 |
Values
| HEX | #3D57AB |
| RGB | rgb(61, 87, 171) |
| HSL | hsl(226, 47%, 45%) |
| OKLCH | oklch(48.2% 0.138 268) |
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 #3D57AB | 6.66:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #3D57AB | 3.14:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #3D57AB text on white | 6.66:1 | AA | Lc 82.6 | Fine for body text |
| #3D57AB text on black | 3.14:1 | AA large text | Lc -19.3 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F2
oklch(88.5% 0.036 266.7)
-
Step 300
300
#AEC0ED
oklch(81% 0.067 267.8)
-
Step 400
400
#849EE4
oklch(70.7% 0.107 268)
-
Step 500
500
#6684DC
oklch(63.1% 0.137 268.1)
-
Step 600
600
#4E6CC9
oklch(55.6% 0.148 267.9)
-
Step 700
700 (this color)
#3D57AB
oklch(48.2% 0.138 268)
-
Step 800
800
#344A8D
oklch(42.8% 0.114 267.7)
-
Step 900
900
#2D3E70
oklch(37.6% 0.088 267.9)
-
Step 950
950
#1B2542
oklch(27.1% 0.056 268.2)
#3D57AB 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) | #2B61AE | 0.029 |
| Deuteranopia (no green cones) | #1358A9 | 0.034 |
| Tritanopia (no blue cones) | #006A79 | 0.115 |
| Achromatopsia (no color) | #5C5C5C | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D57AB
#3D57AB
oklch(48.2% 0.138 268)
- #755A00
#755A00
oklch(48.2% 0.098 88.3)
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 #3D57AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.044
- Dusky Blue #475F94 ΔE 0.049
- Mid Blue #276AB3 ΔE 0.052
- Twilight #4E518B ΔE 0.055
- Dusk Blue #26538D ΔE 0.057
- French Blue #436BAD ΔE 0.057
- Light Navy Blue #2E5A88 ΔE 0.062
- Blueberry #464196 ΔE 0.063
Use #3D57AB 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.