#1D63AD
Closest named color: Mid Blue (#276AB3). oklch(49.7% 0.136 253.5), rgb(29, 99, 173).
Aa
White text reads best on this color (6.10:1).
About this color
#1D63AD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.136 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.023 away. White text reads best on it, at 6.10:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.44:1 |
| White text | 6.10:1 |
Values
| HEX | #1D63AD |
| RGB | rgb(29, 99, 173) |
| HSL | hsl(211, 71%, 40%) |
| OKLCH | oklch(49.7% 0.136 253.5) |
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 #1D63AD | 6.10:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #1D63AD | 3.44:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #1D63AD text on white | 6.10:1 | AA | Lc 80.0 | Fine for body text |
| #1D63AD text on black | 3.44:1 | AA large text | Lc -21.8 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A3C4EB
oklch(81% 0.066 252.8)
-
Step 400
400
#71A4E1
oklch(70.7% 0.105 253.6)
-
Step 500
500
#498CD8
oklch(63.1% 0.134 253.2)
-
Step 600
600
#2974C6
oklch(55.6% 0.147 253.7)
-
Step 700
700 (this color)
#1D63AD
oklch(49.7% 0.136 253.5)
-
Step 800
800
#19508A
oklch(42.8% 0.112 253)
-
Step 900
900
#1C436F
oklch(37.9% 0.088 253.4)
-
Step 950
950
#112741
oklch(26.9% 0.056 253.9)
#1D63AD 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) | #3E69B0 | 0.034 |
| Deuteranopia (no green cones) | #235CAC | 0.019 |
| Tritanopia (no blue cones) | #00757F | 0.103 |
| Achromatopsia (no color) | #626262 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D63AD
#1D63AD
oklch(49.7% 0.136 253.5)
- #865700
#865700
oklch(49.7% 0.106 73)
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 #1D63AD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.023
- French Blue #436BAD ΔE 0.042
- Peacock Blue #016795 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.048
- Dusky Blue #475F94 ΔE 0.051
- Ocean Blue #03719C ΔE 0.054
- Denim #3B638C ΔE 0.057
- Flat Blue #3C73A8 ΔE 0.057
Use #1D63AD 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.