#315D8D
Closest named color: Light Navy Blue (#2E5A88). oklch(47% 0.092 252.2), rgb(49, 93, 141).
Aa
White text reads best on this color (6.81:1).
About this color
#315D8D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.092 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.012 away. White text reads best on it, at 6.81:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.08:1 |
| White text | 6.81:1 |
Values
| HEX | #315D8D |
| RGB | rgb(49, 93, 141) |
| HSL | hsl(211, 48%, 37%) |
| OKLCH | oklch(47% 0.092 252.2) |
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 #315D8D | 6.81:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #315D8D | 3.08:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #315D8D text on white | 6.81:1 | AA | Lc 83.3 | Fine for body text |
| #315D8D text on black | 3.08:1 | AA large text | Lc -18.6 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBEA
oklch(88.6% 0.025 251.9)
-
Step 300
300
#ACC3DD
oklch(80.8% 0.045 251.6)
-
Step 400
400
#80A4CD
oklch(70.7% 0.072 252.1)
-
Step 500
500
#608DBF
oklch(63.1% 0.091 251.9)
-
Step 600
600
#4676AC
oklch(55.6% 0.1 252.6)
-
Step 700
700 (this color)
#315D8D
oklch(47% 0.092 252.2)
-
Step 800
800
#2E5178
oklch(42.7% 0.077 252.4)
-
Step 900
900
#294360
oklch(37.6% 0.059 252.1)
-
Step 950
950
#192838
oklch(27.1% 0.036 250.8)
#315D8D 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) | #48608F | 0.029 |
| Deuteranopia (no green cones) | #3C578C | 0.019 |
| Tritanopia (no blue cones) | #00686E | 0.074 |
| Achromatopsia (no color) | #5B5B5B | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315D8D
#315D8D
oklch(47% 0.092 252.2)
- #7A5112
#7A5112
oklch(46.9% 0.092 72.3)
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 #315D8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.012
- Denim Blue #3B5B92 ΔE 0.015
- Denim #3B638C ΔE 0.022
- Dusky Blue #475F94 ΔE 0.029
- Dusk Blue #26538D ΔE 0.033
- Peacock Blue #016795 ΔE 0.034
- YInMn Blue #415A77 ΔE 0.037
- Dusk #4E5481 ΔE 0.042
Use #315D8D 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.