#1F6BDB
Closest named color: Royal Blue (#4169E1). oklch(54.8% 0.186 259), rgb(31, 107, 219).
Aa
White text reads best on this color (5.01:1).
About this color
#1F6BDB is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.186 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.027 away. White text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.186) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.18:1 |
| White text | 5.01:1 |
Values
| HEX | #1F6BDB |
| RGB | rgb(31, 107, 219) |
| HSL | hsl(216, 75%, 49%) |
| OKLCH | oklch(54.8% 0.186 259) |
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 #1F6BDB | 5.01:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #1F6BDB | 4.18:1 | AA large text | Lc 30.0 | Non-text elements, placeholder text |
| #1F6BDB text on white | 5.01:1 | AA | Lc 74.1 | Content text, not long reading |
| #1F6BDB text on black | 4.18:1 | AA large text | Lc -27.6 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DBF9
oklch(88.6% 0.047 258.4)
-
Step 300
300
#A0C2F7
oklch(80.8% 0.084 259.1)
-
Step 400
400
#6CA1F3
oklch(70.7% 0.133 258.8)
-
Step 500
500
#4387EF
oklch(63.2% 0.171 258.8)
-
Step 600
600 (this color)
#1F6BDB
oklch(54.8% 0.186 259)
-
Step 700
700
#145BC0
oklch(49.1% 0.172 258.8)
-
Step 800
800
#144B9C
oklch(42.8% 0.144 258.9)
-
Step 900
900
#183F7C
oklch(37.6% 0.113 259.2)
-
Step 950
950
#0F2648
oklch(27.1% 0.07 258.2)
#1F6BDB 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) | #1C78DF | 0.034 |
| Deuteranopia (no green cones) | #0067D9 | 0.016 |
| Tritanopia (no blue cones) | #008799 | 0.143 |
| Achromatopsia (no color) | #6F6F6F | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F6BDB
#1F6BDB
oklch(54.8% 0.186 259)
- #946800
#946800
oklch(54.9% 0.114 79.5)
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 #1F6BDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.027
- Cerulean Blue #056EEE ΔE 0.029
- Azul #1D5DEC ΔE 0.043
- Neon Blue #4361EE ΔE 0.045
- Bright Blue #0165FC ΔE 0.053
- Warm Blue #4B57DB ΔE 0.055
- Mid Blue #276AB3 ΔE 0.062
- Windows Blue #3778BF ΔE 0.062
Use #1F6BDB 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.