#316581
Closest named color: Denim (#3B638C). oklch(48.3% 0.072 234.5), rgb(49, 101, 129).
Aa
White text reads best on this color (6.34:1).
About this color
#316581 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.072 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.023 away. White text reads best on it, at 6.34:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.30:1 |
| White text | 6.34:1 |
Values
| HEX | #316581 |
| RGB | rgb(49, 101, 129) |
| HSL | hsl(201, 45%, 35%) |
| OKLCH | oklch(48.3% 0.072 234.5) |
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 #316581 | 6.34:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #316581 | 3.30:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #316581 text on white | 6.34:1 | AA | Lc 81.4 | Fine for body text |
| #316581 text on black | 3.30:1 | AA large text | Lc -20.5 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDCE4
oklch(88.6% 0.019 232.5)
-
Step 300
300
#ACC5D4
oklch(81% 0.034 234.2)
-
Step 400
400
#7FA7BE
oklch(70.7% 0.055 233.8)
-
Step 500
500
#5D91AE
oklch(63.1% 0.071 233.9)
-
Step 600
600
#427B9A
oklch(55.7% 0.077 234.3)
-
Step 700
700 (this color)
#316581
oklch(48.3% 0.072 234.5)
-
Step 800
800
#2B546B
oklch(42.6% 0.06 235.1)
-
Step 900
900
#284657
oklch(37.8% 0.046 234.7)
-
Step 950
950
#182933
oklch(27.1% 0.029 235.2)
#316581 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) | #586482 | 0.046 |
| Deuteranopia (no green cones) | #4C5C81 | 0.038 |
| Tritanopia (no blue cones) | #006C6E | 0.050 |
| Achromatopsia (no color) | #5F5F5F | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #316581
#316581
oklch(48.3% 0.072 234.5)
- #7E5336
#7E5336
oklch(48.3% 0.072 54.2)
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 #316581, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.023
- YInMn Blue #415A77 ΔE 0.034
- Peacock Blue #016795 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.039
- Slate #516572 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.047
- Sea Blue #047495 ΔE 0.048
Use #316581 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.