#3A4F8A
Closest named color: Dusk Blue (#26538D). oklch(44% 0.101 267.4), rgb(58, 79, 138).
Aa
White text reads best on this color (7.87:1).
About this color
#3A4F8A is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.101 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.022 away. White text reads best on it, at 7.87:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #3A4F8A |
| RGB | rgb(58, 79, 138) |
| HSL | hsl(224, 41%, 38%) |
| OKLCH | oklch(44% 0.101 267.4) |
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 #3A4F8A | 7.87:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #3A4F8A | 2.66:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #3A4F8A text on white | 7.87:1 | AAA | Lc 87.2 | Fine for body text |
| #3A4F8A text on black | 2.66:1 | Fails | Lc -14.9 | Not readable |
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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#CFD9F0
oklch(88.5% 0.033 266.9)
-
Step 300
300
#B0C0E8
oklch(80.9% 0.059 267.9)
-
Step 400
400
#879FDC
oklch(70.8% 0.094 267.5)
-
Step 500
500
#6986D2
oklch(63.1% 0.12 267.1)
-
Step 600
600
#516EBF
oklch(55.5% 0.13 267.3)
-
Step 700
700
#425CA5
oklch(49.1% 0.121 267.1)
-
Step 800
800 (this color)
#3A4F8A
oklch(44% 0.101 267.4)
-
Step 900
900
#2F3F6B
oklch(37.6% 0.078 267.5)
-
Step 950
950
#1C253F
oklch(27% 0.05 268.4)
#3A4F8A 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) | #36558C | 0.017 |
| Deuteranopia (no green cones) | #2C4E89 | 0.017 |
| Tritanopia (no blue cones) | #065C65 | 0.091 |
| Achromatopsia (no color) | #515151 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4F8A
#3A4F8A
oklch(44% 0.101 267.4)
- #684F00
#684F00
oklch(44.2% 0.09 87.5)
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 #3A4F8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.022
- Twilight #4E518B ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.035
- Light Navy #155084 ΔE 0.036
- Dusk #4E5481 ΔE 0.037
- Cobalt #1E488F ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.045
Use #3A4F8A 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.