#316DB1
Closest named color: Mid Blue (#276AB3). oklch(52.9% 0.124 253.6), rgb(49, 109, 177).
Aa
White text reads best on this color (5.31:1).
About this color
#316DB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.124 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.013 away. White text reads best on it, at 5.31:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.95:1 |
| White text | 5.31:1 |
Values
| HEX | #316DB1 |
| RGB | rgb(49, 109, 177) |
| HSL | hsl(212, 57%, 44%) |
| OKLCH | oklch(52.9% 0.124 253.6) |
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 #316DB1 | 5.31:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #316DB1 | 3.95:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #316DB1 text on white | 5.31:1 | AA | Lc 76.1 | Fine for body text |
| #316DB1 text on black | 3.95:1 | AA large text | Lc -25.6 | 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 600.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CBDBEE
oklch(88.5% 0.031 252.7)
-
Step 300
300
#A8C3E5
oklch(80.9% 0.057 254.3)
-
Step 400
400
#79A4D7
oklch(70.7% 0.089 253.2)
-
Step 500
500
#558CCD
oklch(63.1% 0.115 253.6)
-
Step 600
600 (this color)
#316DB1
oklch(52.9% 0.124 253.6)
-
Step 700
700
#2B62A0
oklch(49.1% 0.115 253.5)
-
Step 800
800
#255082
oklch(42.7% 0.096 253.9)
-
Step 900
900
#234368
oklch(37.7% 0.074 253.3)
-
Step 950
950
#15273D
oklch(26.9% 0.048 254.2)
#316DB1 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) | #4E72B4 | 0.034 |
| Deuteranopia (no green cones) | #3A66B0 | 0.020 |
| Tritanopia (no blue cones) | #007D86 | 0.096 |
| Achromatopsia (no color) | #6B6B6B | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #316DB1
#316DB1
oklch(52.9% 0.124 253.6)
- #926000
#926000
oklch(53% 0.112 73.8)
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 #316DB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.013
- French Blue #436BAD ΔE 0.017
- Flat Blue #3C73A8 ΔE 0.027
- Muted Blue #3B719F ΔE 0.034
- Windows Blue #3778BF ΔE 0.036
- Nice Blue #107AB0 ΔE 0.038
- Ocean Blue #03719C ΔE 0.044
- Dull Blue #49759C ΔE 0.051
Use #316DB1 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.