#31568F
Closest named color: Dusk Blue (#26538D). oklch(45.5% 0.103 258.8), rgb(49, 86, 143).
Aa
White text reads best on this color (7.34:1).
About this color
#31568F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.103 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.015 away. White text reads best on it, at 7.34:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.85:1 |
| White text | 7.34:1 |
Values
| HEX | #31568F |
| RGB | rgb(49, 86, 143) |
| HSL | hsl(216, 49%, 38%) |
| OKLCH | oklch(45.5% 0.103 258.8) |
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 #31568F | 7.34:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #31568F | 2.85:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #31568F text on white | 7.34:1 | AAA | Lc 85.3 | Fine for body text |
| #31568F text on black | 2.85:1 | Fails | Lc -16.7 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#A9C2E8
oklch(80.8% 0.061 258.7)
-
Step 400
400
#7CA2DD
oklch(70.8% 0.097 259)
-
Step 500
500
#5A8AD3
oklch(63.2% 0.122 258.5)
-
Step 600
600
#3F72C0
oklch(55.5% 0.134 258.7)
-
Step 700
700
#315FA6
oklch(49% 0.125 258.9)
-
Step 800
800 (this color)
#31568F
oklch(45.5% 0.103 258.8)
-
Step 900
900
#26416C
oklch(37.6% 0.081 259.3)
-
Step 950
950
#17273F
oklch(27.2% 0.05 258.3)
#31568F 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) | #3D5B91 | 0.021 |
| Deuteranopia (no green cones) | #2F528E | 0.012 |
| Tritanopia (no blue cones) | #00636B | 0.085 |
| Achromatopsia (no color) | #565656 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31568F
#31568F
oklch(45.5% 0.103 258.8)
- #734F00
#734F00
oklch(45.5% 0.095 78.4)
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 #31568F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.015
- Light Navy Blue #2E5A88 ΔE 0.018
- Denim Blue #3B5B92 ΔE 0.020
- Light Navy #155084 ΔE 0.036
- Twilight #4E518B ΔE 0.037
- Deep Sea Blue #015482 ΔE 0.039
- Dusky Blue #475F94 ΔE 0.040
- Dusk #4E5481 ΔE 0.041
Use #31568F 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.