#313DEF
Closest named color: Light Royal Blue (#3A2EFE). oklch(49.1% 0.258 269.5), rgb(49, 61, 239).
Aa
White text reads best on this color (6.89:1).
About this color
#313DEF is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.258 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Light Royal Blue (#3A2EFE), ΔE 0.028 away. White text reads best on it, at 6.89:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.258) |
| Temperature | cool |
| Nearest name | Light Royal Blue (#3A2EFE) |
| Black text | 3.04:1 |
| White text | 6.89:1 |
Values
| HEX | #313DEF |
| RGB | rgb(49, 61, 239) |
| HSL | hsl(236, 86%, 56%) |
| OKLCH | oklch(49.1% 0.258 269.5) |
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 #313DEF | 6.89:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #313DEF | 3.04:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #313DEF text on white | 6.89:1 | AA | Lc 82.6 | Fine for body text |
| #313DEF text on black | 3.04:1 | AA large text | Lc -19.3 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2EAFF
oklch(93.7% 0.03 269.1)
-
Step 200
200
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A8BEFF
oklch(80.9% 0.096 269.8)
-
Step 400
400
#7B9AFF
oklch(70.8% 0.152 269.4)
-
Step 500
500
#5B7CFF
oklch(63.1% 0.198 269.4)
-
Step 600
600
#4059FF
oklch(55.5% 0.245 269.5)
-
Step 700
700 (this color)
#313DEF
oklch(49.1% 0.258 269.5)
-
Step 800
800
#2835C1
oklch(42.8% 0.213 269.6)
-
Step 900
900
#223298
oklch(37.8% 0.166 269.4)
-
Step 950
950
#131F59
oklch(27.1% 0.105 269.1)
#313DEF 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) | #0063F4 | 0.074 |
| Deuteranopia (no green cones) | #0050EC | 0.037 |
| Tritanopia (no blue cones) | #007294 | 0.197 |
| Achromatopsia (no color) | #5A5A5A | 0.259 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #313DEF
#313DEF
oklch(49.1% 0.258 269.5)
- #775D00
#775D00
oklch(49.1% 0.1 89.6)
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 #313DEF, closest first.
No curated palette has a color within ΔE 0.04 of #313DEF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Royal Blue #3A2EFE ΔE 0.028
- Vibrant Blue #0339F8 ΔE 0.033
- Vivid Blue #152EFF ΔE 0.040
- Electric Blue #0652FF ΔE 0.048
- Rich Blue #021BF9 ΔE 0.060
- Azul #1D5DEC ΔE 0.060
- Majorelle Blue #3F37C9 ΔE 0.064
- Blue Blue #2242C7 ΔE 0.064
Use #313DEF 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.