#315DC8
Closest named color: Warm Blue (#4B57DB). oklch(51% 0.174 264.2), rgb(49, 93, 200).
Aa
White text reads best on this color (5.94:1).
About this color
#315DC8 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.174 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.042 away. White text reads best on it, at 5.94:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #315DC8 |
| RGB | rgb(49, 93, 200) |
| HSL | hsl(223, 61%, 49%) |
| OKLCH | oklch(51% 0.174 264.2) |
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 #315DC8 | 5.94:1 | AA | Lc -84.5 | Fine for body text |
| Black text on #315DC8 | 3.53:1 | AA large text | Lc 24.8 | Dividers and decoration only |
| #315DC8 text on white | 5.94:1 | AA | Lc 79.3 | Fine for body text |
| #315DC8 text on black | 3.53:1 | AA large text | Lc -22.5 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CADAF9
oklch(88.6% 0.046 263.7)
-
Step 300
300
#A5C1F8
oklch(81% 0.084 263.6)
-
Step 400
400
#769EF4
oklch(70.7% 0.134 264.3)
-
Step 500
500
#5383F0
oklch(63.1% 0.172 264.2)
-
Step 600
600
#396ADF
oklch(55.7% 0.187 264.1)
-
Step 700
700 (this color)
#315DC8
oklch(51% 0.174 264.2)
-
Step 800
800
#25489D
oklch(42.8% 0.145 264.3)
-
Step 900
900
#223D7C
oklch(37.6% 0.112 264.3)
-
Step 950
950
#142449
oklch(26.9% 0.072 264.5)
#315DC8 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) | #056BCC | 0.037 |
| Deuteranopia (no green cones) | #005DC6 | 0.025 |
| Tritanopia (no blue cones) | #007789 | 0.138 |
| Achromatopsia (no color) | #646464 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315DC8
#315DC8
oklch(51% 0.174 264.2)
- #826000
#826000
oklch(51% 0.105 84.3)
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 #315DC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.042
- Mid Blue #276AB3 ΔE 0.051
- Royal Blue #4169E1 ΔE 0.052
- Azul #1D5DEC ΔE 0.056
- Iris #6258C4 ΔE 0.060
- Neon Blue #4361EE ΔE 0.063
- French Blue #436BAD ΔE 0.064
- Blue Blue #2242C7 ΔE 0.068
Use #315DC8 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.