#1F54B3
Closest named color: Blue Blue (#2242C7). oklch(46.9% 0.161 261), rgb(31, 84, 179).
Aa
White text reads best on this color (7.05:1).
About this color
#1F54B3 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.161 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.053 away. White text reads best on it, at 7.05:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #1F54B3 |
| RGB | rgb(31, 84, 179) |
| HSL | hsl(219, 70%, 41%) |
| OKLCH | oklch(46.9% 0.161 261) |
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 #1F54B3 | 7.05:1 | AAA | Lc -88.9 | Fine for body text |
| Black text on #1F54B3 | 2.97:1 | Fails | Lc 20.1 | Dividers and decoration only |
| #1F54B3 text on white | 7.05:1 | AAA | Lc 83.9 | Fine for body text |
| #1F54B3 text on black | 2.97:1 | Fails | Lc -18.1 | 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
#E1EAF9
oklch(93.5% 0.023 260.7)
-
Step 200
200
#C9DAF7
oklch(88.5% 0.044 261.2)
-
Step 300
300
#A4C2F4
oklch(81% 0.078 260.5)
-
Step 400
400
#73A0EE
oklch(70.6% 0.125 260.9)
-
Step 500
500
#4F86E9
oklch(63.1% 0.16 261.2)
-
Step 600
600
#336DD7
oklch(55.5% 0.174 261.2)
-
Step 700
700 (this color)
#1F54B3
oklch(46.9% 0.161 261)
-
Step 800
800
#204B97
oklch(42.8% 0.134 260.8)
-
Step 900
900
#1F3F78
oklch(37.6% 0.105 261)
-
Step 950
950
#132546
oklch(26.9% 0.066 261.5)
#1F54B3 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) | #0A60B6 | 0.031 |
| Deuteranopia (no green cones) | #0052B1 | 0.016 |
| Tritanopia (no blue cones) | #006B7B | 0.124 |
| Achromatopsia (no color) | #595959 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F54B3
#1F54B3
oklch(46.9% 0.161 261)
- #765400
#765400
oklch(47% 0.097 81.4)
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 #1F54B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.053
- Dusk Blue #26538D ΔE 0.061
- Mid Blue #276AB3 ΔE 0.062
- Denim Blue #3B5B92 ΔE 0.064
- Cobalt #1E488F ΔE 0.065
- Sapphire #2138AB ΔE 0.069
- Blueberry #464196 ΔE 0.072
- Majorelle Blue #3F37C9 ΔE 0.074
Use #1F54B3 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.