#315EA4
Closest named color: Denim Blue (#3B5B92). oklch(48.7% 0.123 259), rgb(49, 94, 164).
Aa
White text reads best on this color (6.42:1).
About this color
#315EA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.123 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.029 away. White text reads best on it, at 6.42:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.26:1 |
| White text | 6.42:1 |
Values
| HEX | #315EA4 |
| RGB | rgb(49, 94, 164) |
| HSL | hsl(217, 54%, 42%) |
| OKLCH | oklch(48.7% 0.123 259) |
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 #315EA4 | 6.42:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #315EA4 | 3.26:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #315EA4 text on white | 6.42:1 | AA | Lc 81.6 | Fine for body text |
| #315EA4 text on black | 3.26:1 | AA large text | Lc -20.2 | 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
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#AAC2E8
oklch(80.9% 0.06 259.5)
-
Step 400
400
#7CA2DC
oklch(70.7% 0.095 258.6)
-
Step 500
500
#5B8AD3
oklch(63.2% 0.122 258.9)
-
Step 600
600
#4072C0
oklch(55.6% 0.133 259)
-
Step 700
700 (this color)
#315EA4
oklch(48.7% 0.123 259)
-
Step 800
800
#2A4E86
oklch(42.7% 0.102 259)
-
Step 900
900
#26416B
oklch(37.6% 0.08 258.9)
-
Step 950
950
#17263F
oklch(26.9% 0.051 260.2)
#315EA4 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) | #3D64A7 | 0.023 |
| Deuteranopia (no green cones) | #2A5AA3 | 0.014 |
| Tritanopia (no blue cones) | #006E79 | 0.098 |
| Achromatopsia (no color) | #5F5F5F | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315EA4
#315EA4
oklch(48.7% 0.123 259)
- #7E5700
#7E5700
oklch(48.6% 0.101 78.5)
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 #315EA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.029
- Dusky Blue #475F94 ΔE 0.035
- Mid Blue #276AB3 ΔE 0.037
- French Blue #436BAD ΔE 0.045
- Peacock Blue #016795 ΔE 0.045
- Denim #3B638C ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.046
- Dusk Blue #26538D ΔE 0.048
Use #315EA4 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.