#317AEB
Closest named color: Clear Blue (#247AFD). oklch(59.6% 0.186 259.2), rgb(49, 122, 235).
Aa
Black text reads best on this color (5.11:1).
About this color
#317AEB is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.186 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.027 away. Black text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.186) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.11:1 |
| White text | 4.10:1 |
Values
| HEX | #317AEB |
| RGB | rgb(49, 122, 235) |
| HSL | hsl(216, 82%, 56%) |
| OKLCH | oklch(59.6% 0.186 259.2) |
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 #317AEB | 4.10:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #317AEB | 5.11:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #317AEB text on white | 4.10:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #317AEB text on black | 5.11:1 | AA | Lc -34.0 | 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
#C6DBFB
oklch(88.6% 0.05 258.7)
-
Step 300
300
#9EC2FC
oklch(80.9% 0.091 259.8)
-
Step 400
400
#67A0FA
oklch(70.6% 0.146 259.2)
-
Step 500
500 (this color)
#317AEB
oklch(59.6% 0.186 259.2)
-
Step 600
600
#166BE6
oklch(55.5% 0.202 259.2)
-
Step 700
700
#0659C8
oklch(49.2% 0.187 259.1)
-
Step 800
800
#0C49A2
oklch(42.7% 0.156 259.3)
-
Step 900
900
#143E80
oklch(37.6% 0.121 259.5)
-
Step 950
950
#0D254B
oklch(27% 0.077 259.3)
#317AEB 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) | #3886EF | 0.033 |
| Deuteranopia (no green cones) | #0075E9 | 0.025 |
| Tritanopia (no blue cones) | #0095A7 | 0.143 |
| Achromatopsia (no color) | #7D7D7D | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #317AEB
#317AEB
oklch(59.6% 0.186 259.2)
- #A67500
#A67500
oklch(59.7% 0.124 79.4)
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 #317AEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.027
- Cerulean Blue #056EEE ΔE 0.039
- Royal Blue #4169E1 ΔE 0.043
- Cornflower #6A79F7 ΔE 0.060
- Dodger Blue #1E90FF ΔE 0.060
- Dark Sky Blue #448EE4 ΔE 0.060
- Neon Blue #4361EE ΔE 0.060
- Bright Blue #0165FC ΔE 0.064
Use #317AEB 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.