#1F63A0
Closest named color: Peacock Blue (#016795). oklch(48.9% 0.118 249.8), rgb(31, 99, 160).
Aa
White text reads best on this color (6.26:1).
About this color
#1F63A0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.118 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.026 away. White text reads best on it, at 6.26:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.35:1 |
| White text | 6.26:1 |
Values
| HEX | #1F63A0 |
| RGB | rgb(31, 99, 160) |
| HSL | hsl(208, 68%, 37%) |
| OKLCH | oklch(48.9% 0.118 249.8) |
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 #1F63A0 | 6.26:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #1F63A0 | 3.35:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #1F63A0 text on white | 6.26:1 | AA | Lc 80.8 | Fine for body text |
| #1F63A0 text on black | 3.35:1 | AA large text | Lc -21.0 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CADBEE
oklch(88.5% 0.032 251.1)
-
Step 300
300
#A5C4E5
oklch(80.9% 0.058 250.2)
-
Step 400
400
#74A5D8
oklch(70.7% 0.092 250.2)
-
Step 500
500
#4D8ECD
oklch(63.1% 0.117 249.5)
-
Step 600
600
#2E77BA
oklch(55.7% 0.127 249.6)
-
Step 700
700 (this color)
#1F63A0
oklch(48.9% 0.118 249.8)
-
Step 800
800
#1D5182
oklch(42.6% 0.098 250.2)
-
Step 900
900
#1E4468
oklch(37.7% 0.076 249.4)
-
Step 950
950
#12283D
oklch(27% 0.048 249)
#1F63A0 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) | #4667A2 | 0.039 |
| Deuteranopia (no green cones) | #325B9F | 0.024 |
| Tritanopia (no blue cones) | #00727A | 0.087 |
| Achromatopsia (no color) | #606060 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F63A0
#1F63A0
oklch(48.9% 0.118 249.8)
- #865300
#865300
oklch(48.9% 0.106 69.3)
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 #1F63A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.033
- Mid Blue #276AB3 ΔE 0.035
- Denim #3B638C ΔE 0.038
- Dusky Blue #475F94 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.042
- Ocean Blue #03719C ΔE 0.043
- French Blue #436BAD ΔE 0.046
Use #1F63A0 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.