#3957AA
Closest named color: Denim Blue (#3B5B92). oklch(47.9% 0.138 266.3), rgb(57, 87, 170).
Aa
White text reads best on this color (6.73:1).
About this color
#3957AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.138 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.042 away. White text reads best on it, at 6.73:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.11:1 |
| White text | 6.73:1 |
Values
| HEX | #3957AA |
| RGB | rgb(57, 87, 170) |
| HSL | hsl(224, 50%, 45%) |
| OKLCH | oklch(47.9% 0.138 266.3) |
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 #3957AA | 6.73:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #3957AA | 3.11:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #3957AA text on white | 6.73:1 | AA | Lc 82.9 | Fine for body text |
| #3957AA text on black | 3.11:1 | AA large text | Lc -19.0 | 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
#ADC0ED
oklch(80.9% 0.067 267)
-
Step 400
400
#829FE3
oklch(70.8% 0.105 266.1)
-
Step 500
500
#6385DC
oklch(63.1% 0.137 266.4)
-
Step 600
600
#4B6DC9
oklch(55.6% 0.148 266.4)
-
Step 700
700 (this color)
#3957AA
oklch(47.9% 0.138 266.3)
-
Step 800
800
#324A8D
oklch(42.6% 0.115 266.7)
-
Step 900
900
#2C3F70
oklch(37.8% 0.087 266.3)
-
Step 950
950
#1A2542
oklch(27% 0.056 266.9)
#3957AA 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) | #2B61AD | 0.028 |
| Deuteranopia (no green cones) | #1157A8 | 0.031 |
| Tritanopia (no blue cones) | #006A78 | 0.114 |
| Achromatopsia (no color) | #5C5C5C | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3957AA
#3957AA
oklch(47.9% 0.138 266.3)
- #765800
#765800
oklch(47.9% 0.098 85.5)
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 #3957AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.049
- Mid Blue #276AB3 ΔE 0.051
- Dusk Blue #26538D ΔE 0.053
- Twilight #4E518B ΔE 0.055
- French Blue #436BAD ΔE 0.058
- Light Navy Blue #2E5A88 ΔE 0.059
- Blueberry #464196 ΔE 0.062
Use #3957AA 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.