#317AE8
Closest named color: Clear Blue (#247AFD). oklch(59.4% 0.182 258.8), rgb(49, 122, 232).
Aa
Black text reads best on this color (5.07:1).
About this color
#317AE8 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.182 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.032 away. Black text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.07:1 |
| White text | 4.13:1 |
Values
| HEX | #317AE8 |
| RGB | rgb(49, 122, 232) |
| HSL | hsl(216, 80%, 55%) |
| OKLCH | oklch(59.4% 0.182 258.8) |
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 #317AE8 | 4.13:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #317AE8 | 5.07:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #317AE8 text on white | 4.13:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #317AE8 text on black | 5.07:1 | AA | Lc -33.7 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9EC2FA
oklch(80.8% 0.089 259.1)
-
Step 400
400
#68A1F8
oklch(70.8% 0.142 258.6)
-
Step 500
500 (this color)
#317AE8
oklch(59.4% 0.182 258.8)
-
Step 600
600
#176CE4
oklch(55.6% 0.198 258.9)
-
Step 700
700
#0759C6
oklch(49% 0.184 259)
-
Step 800
800
#0C4AA0
oklch(42.7% 0.152 258.7)
-
Step 900
900
#143F7F
oklch(37.7% 0.118 258.7)
-
Step 950
950
#0D254A
oklch(26.9% 0.075 258.9)
#317AE8 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) | #3B86EC | 0.034 |
| Deuteranopia (no green cones) | #0075E6 | 0.025 |
| Tritanopia (no blue cones) | #0094A6 | 0.139 |
| Achromatopsia (no color) | #7D7D7D | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #317AE8
#317AE8
oklch(59.4% 0.182 258.8)
- #A57400
#A57400
oklch(59.4% 0.123 79.2)
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 #317AE8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.032
- Cerulean Blue #056EEE ΔE 0.040
- Royal Blue #4169E1 ΔE 0.042
- Dark Sky Blue #448EE4 ΔE 0.059
- Neon Blue #4361EE ΔE 0.061
- Water Blue #0E87CC ΔE 0.061
- Cornflower #6A79F7 ΔE 0.062
- Dodger Blue #1E90FF ΔE 0.062
Use #317AE8 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.