#3958B5
Closest named color: Mid Blue (#276AB3). oklch(48.9% 0.152 266.8), rgb(57, 88, 181).
Aa
White text reads best on this color (6.48:1).
About this color
#3958B5 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.152 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.049 away. White text reads best on it, at 6.48:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.23:1 |
| White text | 6.48:1 |
Values
| HEX | #3958B5 |
| RGB | rgb(57, 88, 181) |
| HSL | hsl(225, 52%, 47%) |
| OKLCH | oklch(48.9% 0.152 266.8) |
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 #3958B5 | 6.48:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #3958B5 | 3.23:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #3958B5 text on white | 6.48:1 | AA | Lc 81.8 | Fine for body text |
| #3958B5 text on black | 3.23:1 | AA large text | Lc -20.1 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ABC0F1
oklch(80.9% 0.073 266.7)
-
Step 400
400
#7F9EEA
oklch(70.7% 0.117 266.5)
-
Step 500
500
#6084E4
oklch(63.2% 0.15 266.7)
-
Step 600
600
#486BD2
oklch(55.6% 0.164 266.9)
-
Step 700
700 (this color)
#3958B5
oklch(48.9% 0.152 266.8)
-
Step 800
800
#304993
oklch(42.7% 0.125 267)
-
Step 900
900
#2A3E75
oklch(37.8% 0.097 266.7)
-
Step 950
950
#192545
oklch(27.2% 0.062 266.8)
#3958B5 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) | #2064B8 | 0.034 |
| Deuteranopia (no green cones) | #0059B3 | 0.035 |
| Tritanopia (no blue cones) | #006E7E | 0.124 |
| Achromatopsia (no color) | #5E5E5E | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3958B5
#3958B5
oklch(48.9% 0.152 266.8)
- #795B00
#795B00
oklch(48.9% 0.1 86.2)
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 #3958B5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.049
- French Blue #436BAD ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.058
- Iris #6258C4 ΔE 0.060
- Dusky Blue #475F94 ΔE 0.062
- Warm Blue #4B57DB ΔE 0.064
- Blue Blue #2242C7 ΔE 0.067
- Dusk Blue #26538D ΔE 0.069
Use #3958B5 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.