#315EBB
Closest named color: Mid Blue (#276AB3). oklch(50.2% 0.155 262.7), rgb(49, 94, 187).
Aa
White text reads best on this color (6.08:1).
About this color
#315EBB is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.155 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.037 away. White text reads best on it, at 6.08:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.44:1 |
| White text | 6.08:1 |
Values
| HEX | #315EBB |
| RGB | rgb(49, 94, 187) |
| HSL | hsl(220, 58%, 46%) |
| OKLCH | oklch(50.2% 0.155 262.7) |
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 #315EBB | 6.08:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #315EBB | 3.44:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #315EBB text on white | 6.08:1 | AA | Lc 80.0 | Fine for body text |
| #315EBB text on black | 3.44:1 | AA large text | Lc -21.8 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBDAF6
oklch(88.6% 0.042 263)
-
Step 300
300
#A7C1F2
oklch(80.9% 0.075 262.9)
-
Step 400
400
#78A0EC
oklch(70.8% 0.12 262.5)
-
Step 500
500
#5686E5
oklch(63.2% 0.153 262.6)
-
Step 600
600
#3B6DD3
oklch(55.5% 0.167 262.6)
-
Step 700
700 (this color)
#315EBB
oklch(50.2% 0.155 262.7)
-
Step 800
800
#274A94
oklch(42.6% 0.129 263)
-
Step 900
900
#243F76
oklch(37.7% 0.1 262.9)
-
Step 950
950
#152545
oklch(26.9% 0.064 262.8)
#315EBB 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) | #2769BE | 0.029 |
| Deuteranopia (no green cones) | #005CB9 | 0.027 |
| Tritanopia (no blue cones) | #007483 | 0.123 |
| Achromatopsia (no color) | #626262 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315EBB
#315EBB
oklch(50.2% 0.155 262.7)
- #815D00
#815D00
oklch(50.3% 0.104 82.2)
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 #315EBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.037
- French Blue #436BAD ΔE 0.050
- Warm Blue #4B57DB ΔE 0.060
- Iris #6258C4 ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.065
- Dusky Blue #475F94 ΔE 0.066
- Royal Blue #4169E1 ΔE 0.067
- Windows Blue #3778BF ΔE 0.072
Use #315EBB 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.