#315EA1
Closest named color: Denim Blue (#3B5B92). oklch(48.5% 0.119 258.3), rgb(49, 94, 161).
Aa
White text reads best on this color (6.46:1).
About this color
#315EA1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.119 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.025 away. White text reads best on it, at 6.46:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.24:1 |
| White text | 6.46:1 |
Values
| HEX | #315EA1 |
| RGB | rgb(49, 94, 161) |
| HSL | hsl(216, 53%, 41%) |
| OKLCH | oklch(48.5% 0.119 258.3) |
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 #315EA1 | 6.46:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #315EA1 | 3.24:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #315EA1 text on white | 6.46:1 | AA | Lc 81.8 | Fine for body text |
| #315EA1 text on black | 3.24:1 | AA large text | Lc -20.1 | 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 700.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF5
oklch(93.5% 0.017 259.4)
-
Step 200
200
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300
#AAC2E6
oklch(80.8% 0.057 258.4)
-
Step 400
400
#7DA2DA
oklch(70.7% 0.092 258.5)
-
Step 500
500
#5B8AD0
oklch(63.1% 0.118 258.1)
-
Step 600
600
#4173BD
oklch(55.7% 0.128 258.1)
-
Step 700
700 (this color)
#315EA1
oklch(48.5% 0.119 258.3)
-
Step 800
800
#2B4F84
oklch(42.8% 0.098 258)
-
Step 900
900
#27426A
oklch(37.8% 0.076 258.1)
-
Step 950
950
#17273E
oklch(27.1% 0.048 257.5)
#315EA1 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) | #3F64A4 | 0.024 |
| Deuteranopia (no green cones) | #2D59A0 | 0.015 |
| Tritanopia (no blue cones) | #006D77 | 0.095 |
| Achromatopsia (no color) | #5E5E5E | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315EA1
#315EA1
oklch(48.5% 0.119 258.3)
- #7E5600
#7E5600
oklch(48.4% 0.101 77.5)
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 #315EA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.025
- Dusky Blue #475F94 ΔE 0.032
- Mid Blue #276AB3 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.041
- Denim #3B638C ΔE 0.041
- Peacock Blue #016795 ΔE 0.042
- Dusk Blue #26538D ΔE 0.045
- French Blue #436BAD ΔE 0.046
Use #315EA1 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.