#1630CD
Closest named color: Blue Blue (#2242C7). oklch(42.7% 0.236 266.1), rgb(22, 48, 205).
Aa
White text reads best on this color (8.98:1).
About this color
#1630CD is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.236 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.038 away. White text reads best on it, at 8.98:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.236) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.33:1 |
| White text | 8.98:1 |
Values
| HEX | #1630CD |
| RGB | rgb(22, 48, 205) |
| HSL | hsl(231, 81%, 45%) |
| OKLCH | oklch(42.7% 0.236 266.1) |
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 #1630CD | 8.98:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #1630CD | 2.33:1 | Fails | Lc 14.8 | Not readable |
| #1630CD text on white | 8.98:1 | AAA | Lc 89.2 | Fine for body text |
| #1630CD text on black | 2.33:1 | Fails | Lc -13.0 | Not readable |
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 800.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#749CFF
oklch(70.8% 0.152 266)
-
Step 500
500
#517FFF
oklch(63.2% 0.197 266)
-
Step 600
600
#305DFF
oklch(55.6% 0.244 266.1)
-
Step 700
700
#1C35FE
oklch(49% 0.285 266.2)
-
Step 800
800 (this color)
#1630CD
oklch(42.7% 0.236 266.1)
-
Step 900
900
#152FA1
oklch(37.7% 0.184 266.2)
-
Step 950
950
#0C1E5E
oklch(27% 0.116 266.2)
#1630CD 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) | #0052D1 | 0.068 |
| Deuteranopia (no green cones) | #0040CA | 0.028 |
| Tritanopia (no blue cones) | #00607D | 0.179 |
| Achromatopsia (no color) | #494949 | 0.237 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1630CD
#1630CD
oklch(42.7% 0.236 266.1)
- #644B00
#644B00
oklch(42.8% 0.087 86.6)
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 #1630CD, closest first.
No curated palette has a color within ΔE 0.04 of #1630CD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.038
- Ultramarine Blue #1805DB ΔE 0.042
- True Blue #010FCC ΔE 0.045
- Majorelle Blue #3F37C9 ΔE 0.050
- Pure Blue #0203E2 ΔE 0.051
- Medium Blue #0000CD ΔE 0.053
- Sapphire #2138AB ΔE 0.056
- Strong Blue #0C06F7 ΔE 0.069
Use #1630CD 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.