#1F56B8
Closest named color: Blue Blue (#2242C7). oklch(47.7% 0.166 261), rgb(31, 86, 184).
Aa
White text reads best on this color (6.81:1).
About this color
#1F56B8 is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.166 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.052 away. White text reads best on it, at 6.81:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.08:1 |
| White text | 6.81:1 |
Values
| HEX | #1F56B8 |
| RGB | rgb(31, 86, 184) |
| HSL | hsl(218, 71%, 42%) |
| OKLCH | oklch(47.7% 0.166 261) |
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 #1F56B8 | 6.81:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #1F56B8 | 3.08:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #1F56B8 text on white | 6.81:1 | AA | Lc 83.0 | Fine for body text |
| #1F56B8 text on black | 3.08:1 | AA large text | Lc -19.0 | 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 700.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF7
oklch(88.5% 0.044 261.2)
-
Step 300
300
#A4C2F5
oklch(81% 0.08 260.9)
-
Step 400
400
#72A0F0
oklch(70.7% 0.128 260.9)
-
Step 500
500
#4D86EB
oklch(63.1% 0.164 260.9)
-
Step 600
600
#306DDA
oklch(55.6% 0.179 261)
-
Step 700
700 (this color)
#1F56B8
oklch(47.7% 0.166 261)
-
Step 800
800
#1F4A99
oklch(42.7% 0.138 261.3)
-
Step 900
900
#1E3F79
oklch(37.7% 0.106 260.8)
-
Step 950
950
#122547
oklch(26.9% 0.068 261.1)
#1F56B8 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) | #0662BB | 0.031 |
| Deuteranopia (no green cones) | #0054B6 | 0.016 |
| Tritanopia (no blue cones) | #006E7E | 0.128 |
| Achromatopsia (no color) | #5B5B5B | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F56B8
#1F56B8
oklch(47.7% 0.166 261)
- #795600
#795600
oklch(47.8% 0.099 81.2)
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 #1F56B8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.052
- Mid Blue #276AB3 ΔE 0.057
- Denim Blue #3B5B92 ΔE 0.069
- Dusk Blue #26538D ΔE 0.069
- Warm Blue #4B57DB ΔE 0.072
- Cobalt #1E488F ΔE 0.074
- Majorelle Blue #3F37C9 ΔE 0.074
- French Blue #436BAD ΔE 0.074
Use #1F56B8 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.