#1F6FFA
Closest named color: Cerulean Blue (#056EEE). oklch(58% 0.221 260.9), rgb(31, 111, 250).
Aa
Black text reads best on this color (4.71:1).
About this color
#1F6FFA is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.221 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.021 away. Black text reads best on it, at 4.71:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.221) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #1F6FFA |
| RGB | rgb(31, 111, 250) |
| HSL | hsl(218, 96%, 55%) |
| OKLCH | oklch(58% 0.221 260.9) |
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 #1F6FFA | 4.45:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #1F6FFA | 4.71:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #1F6FFA text on white | 4.45:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #1F6FFA text on black | 4.71:1 | AA | Lc -31.5 | 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 600.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9EC2FF
oklch(81% 0.095 260.8)
-
Step 400
400
#689FFF
oklch(70.7% 0.153 260.8)
-
Step 500
500
#3D83FF
oklch(63.2% 0.198 260.8)
-
Step 600
600 (this color)
#1F6FFA
oklch(58% 0.221 260.9)
-
Step 700
700
#0654D2
oklch(49% 0.206 261)
-
Step 800
800
#0B46AA
oklch(42.7% 0.171 260.9)
-
Step 900
900
#133C86
oklch(37.6% 0.132 261.1)
-
Step 950
950
#0C244F
oklch(27% 0.085 261)
#1F6FFA 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) | #0082FF | 0.046 |
| Deuteranopia (no green cones) | #006EF7 | 0.011 |
| Tritanopia (no blue cones) | #0092AA | 0.168 |
| Achromatopsia (no color) | #777777 | 0.221 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F6FFA
#1F6FFA
oklch(58% 0.221 260.9)
- #9E7100
#9E7100
oklch(57.9% 0.12 80.8)
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 #1F6FFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.021
- Bright Blue #0165FC ΔE 0.027
- Clear Blue #247AFD ΔE 0.028
- Neon Blue #4361EE ΔE 0.040
- Royal Blue #4169E1 ΔE 0.043
- Azul #1D5DEC ΔE 0.047
- Electric Blue #0652FF ΔE 0.067
- Warm Blue #4B57DB ΔE 0.074
Use #1F6FFA 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.