#315B8D
Closest named color: Light Navy Blue (#2E5A88). oklch(46.5% 0.094 254), rgb(49, 91, 141).
Aa
White text reads best on this color (6.97:1).
About this color
#315B8D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.094 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.009 away. White text reads best on it, at 6.97:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.01:1 |
| White text | 6.97:1 |
Values
| HEX | #315B8D |
| RGB | rgb(49, 91, 141) |
| HSL | hsl(213, 48%, 37%) |
| OKLCH | oklch(46.5% 0.094 254) |
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 #315B8D | 6.97:1 | AA | Lc -88.9 | Fine for body text |
| Black text on #315B8D | 3.01:1 | AA large text | Lc 20.1 | Dividers and decoration only |
| #315B8D text on white | 6.97:1 | AA | Lc 83.9 | Fine for body text |
| #315B8D text on black | 3.01:1 | AA large text | Lc -18.0 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CEDAEA
oklch(88.4% 0.026 255.6)
-
Step 300
300
#ADC3DE
oklch(80.9% 0.045 253.6)
-
Step 400
400
#81A3CE
oklch(70.6% 0.074 254.6)
-
Step 500
500
#618CC1
oklch(63.1% 0.093 254.2)
-
Step 600
600
#4775AD
oklch(55.5% 0.101 254.2)
-
Step 700
700 (this color)
#315B8D
oklch(46.5% 0.094 254)
-
Step 800
800
#2F5079
oklch(42.6% 0.079 254.6)
-
Step 900
900
#2A4361
oklch(37.7% 0.06 253.7)
-
Step 950
950
#192739
oklch(26.9% 0.039 255.1)
#315B8D 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) | #455E8F | 0.026 |
| Deuteranopia (no green cones) | #39558C | 0.018 |
| Tritanopia (no blue cones) | #00676D | 0.078 |
| Achromatopsia (no color) | #595959 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315B8D
#315B8D
oklch(46.5% 0.094 254)
- #78500A
#78500A
oklch(46.4% 0.094 74.2)
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 #315B8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.009
- Denim Blue #3B5B92 ΔE 0.014
- Dusk Blue #26538D ΔE 0.028
- Denim #3B638C ΔE 0.028
- Dusky Blue #475F94 ΔE 0.031
- Peacock Blue #016795 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.038
- Dusk #4E5481 ΔE 0.040
Use #315B8D 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.