#315E9A
Closest named color: Denim Blue (#3B5B92). oklch(48% 0.109 256.3), rgb(49, 94, 154).
Aa
White text reads best on this color (6.56:1).
About this color
#315E9A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.109 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.016 away. White text reads best on it, at 6.56:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.19:1 |
| White text | 6.56:1 |
Values
| HEX | #315E9A |
| RGB | rgb(49, 94, 154) |
| HSL | hsl(214, 52%, 40%) |
| OKLCH | oklch(48% 0.109 256.3) |
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 #315E9A | 6.56:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #315E9A | 3.19:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #315E9A text on white | 6.56:1 | AA | Lc 82.3 | Fine for body text |
| #315E9A text on black | 3.19:1 | AA large text | Lc -19.6 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EAF4
oklch(93.5% 0.015 257.2)
-
Step 200
200
#CDDAED
oklch(88.4% 0.03 257.8)
-
Step 300
300
#ABC3E3
oklch(81% 0.052 255.7)
-
Step 400
400
#7EA3D5
oklch(70.7% 0.084 256.1)
-
Step 500
500
#5D8BCA
oklch(63.1% 0.108 256.5)
-
Step 600
600
#4274B7
oklch(55.6% 0.118 256.3)
-
Step 700
700 (this color)
#315E9A
oklch(48% 0.109 256.3)
-
Step 800
800
#2C5080
oklch(42.9% 0.09 256.2)
-
Step 900
900
#284266
oklch(37.6% 0.07 256.8)
-
Step 950
950
#18273C
oklch(27% 0.044 256.9)
#315E9A 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) | #43639C | 0.026 |
| Deuteranopia (no green cones) | #345999 | 0.014 |
| Tritanopia (no blue cones) | #006C74 | 0.088 |
| Achromatopsia (no color) | #5D5D5D | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315E9A
#315E9A
oklch(48% 0.109 256.3)
- #7D5400
#7D5400
oklch(47.9% 0.1 76.2)
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 #315E9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.016
- Dusky Blue #475F94 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.030
- Denim #3B638C ΔE 0.032
- Peacock Blue #016795 ΔE 0.036
- Dusk Blue #26538D ΔE 0.039
- Mid Blue #276AB3 ΔE 0.047
- Twilight #4E518B ΔE 0.049
Use #315E9A 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.