#3D4E8F
Closest named color: Dusk Blue (#26538D). oklch(44.3% 0.109 270.4), rgb(61, 78, 143).
Aa
White text reads best on this color (7.82:1).
About this color
#3D4E8F is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.109 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.027 away. White text reads best on it, at 7.82:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.68:1 |
| White text | 7.82:1 |
Values
| HEX | #3D4E8F |
| RGB | rgb(61, 78, 143) |
| HSL | hsl(228, 40%, 40%) |
| OKLCH | oklch(44.3% 0.109 270.4) |
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 #3D4E8F | 7.82:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #3D4E8F | 2.68:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #3D4E8F text on white | 7.82:1 | AAA | Lc 87.0 | Fine for body text |
| #3D4E8F text on black | 2.68:1 | Fails | Lc -15.1 | 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 800.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF7
oklch(93.7% 0.018 269.1)
-
Step 200
200
#D0D9F1
oklch(88.6% 0.034 269.3)
-
Step 300
300
#B1BFEB
oklch(80.9% 0.064 271.1)
-
Step 400
400
#889DE0
oklch(70.6% 0.101 270.3)
-
Step 500
500
#6C84D8
oklch(63.2% 0.13 270.3)
-
Step 600
600
#556CC5
oklch(55.7% 0.14 270.4)
-
Step 700
700
#4559AA
oklch(49% 0.131 270.5)
-
Step 800
800 (this color)
#3D4E8F
oklch(44.3% 0.109 270.4)
-
Step 900
900
#313E6E
oklch(37.7% 0.084 270.5)
-
Step 950
950
#1C2541
oklch(27.1% 0.054 269.1)
#3D4E8F 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) | #315691 | 0.024 |
| Deuteranopia (no green cones) | #274F8E | 0.025 |
| Tritanopia (no blue cones) | #0C5C67 | 0.097 |
| Achromatopsia (no color) | #525252 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4E8F
#3D4E8F
oklch(44.3% 0.109 270.4)
- #675100
#675100
oklch(44.5% 0.091 90.6)
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 #3D4E8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.027
- Twilight #4E518B ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.037
- Blueberry #464196 ΔE 0.039
- Cobalt #1E488F ΔE 0.040
- Dusk #4E5481 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.041
- Light Navy #155084 ΔE 0.044
Use #3D4E8F 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.