#315FA7
Closest named color: Mid Blue (#276AB3). oklch(49.1% 0.126 259.1), rgb(49, 95, 167).
Aa
White text reads best on this color (6.31:1).
About this color
#315FA7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.126 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.033 away. White text reads best on it, at 6.31:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.32:1 |
| White text | 6.31:1 |
Values
| HEX | #315FA7 |
| RGB | rgb(49, 95, 167) |
| HSL | hsl(217, 55%, 42%) |
| OKLCH | oklch(49.1% 0.126 259.1) |
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 #315FA7 | 6.31:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #315FA7 | 3.32:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #315FA7 text on white | 6.31:1 | AA | Lc 81.1 | Fine for body text |
| #315FA7 text on black | 3.32:1 | AA large text | Lc -20.7 | 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
#A9C2E9
oklch(80.9% 0.062 259.2)
-
Step 400
400
#7CA2DE
oklch(70.8% 0.098 259.3)
-
Step 500
500
#5A89D4
oklch(63% 0.125 259.4)
-
Step 600
600
#3F72C2
oklch(55.6% 0.136 259.1)
-
Step 700
700 (this color)
#315FA7
oklch(49.1% 0.126 259.1)
-
Step 800
800
#294E87
oklch(42.7% 0.104 258.8)
-
Step 900
900
#26416C
oklch(37.6% 0.081 259.3)
-
Step 950
950
#17263F
oklch(26.9% 0.051 260.2)
#315FA7 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) | #3D66AA | 0.025 |
| Deuteranopia (no green cones) | #285BA6 | 0.015 |
| Tritanopia (no blue cones) | #00707B | 0.101 |
| Achromatopsia (no color) | #606060 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315FA7
#315FA7
oklch(49.1% 0.126 259.1)
- #7F5800
#7F5800
oklch(49% 0.102 78.8)
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 #315FA7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.034
- Dusky Blue #475F94 ΔE 0.037
- French Blue #436BAD ΔE 0.041
- Peacock Blue #016795 ΔE 0.047
- Denim #3B638C ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.051
- Dusk Blue #26538D ΔE 0.053
Use #315FA7 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.