#1234CA
Closest named color: Blue Blue (#2242C7). oklch(42.8% 0.23 265.4), rgb(18, 52, 202).
Aa
White text reads best on this color (8.86:1).
About this color
#1234CA is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.230 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.032 away. White text reads best on it, at 8.86:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.230) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.36:1 |
| White text | 8.86:1 |
Values
| HEX | #1234CA |
| RGB | rgb(18, 52, 202) |
| HSL | hsl(229, 84%, 43%) |
| OKLCH | oklch(42.8% 0.23 265.4) |
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 #1234CA | 8.86:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #1234CA | 2.36:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #1234CA text on white | 8.86:1 | AAA | Lc 88.9 | Fine for body text |
| #1234CA text on black | 2.36:1 | Fails | Lc -13.3 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C7D9FF
oklch(88.4% 0.056 265.2)
-
Step 300
300
#A3C0FF
oklch(80.9% 0.095 265.2)
-
Step 400
400
#729CFF
oklch(70.6% 0.153 265.4)
-
Step 500
500
#4E7FFF
oklch(63% 0.198 265.3)
-
Step 600
600
#2C5EFF
oklch(55.6% 0.244 265.3)
-
Step 700
700
#153AFA
oklch(49% 0.278 265.3)
-
Step 800
800 (this color)
#1234CA
oklch(42.8% 0.23 265.4)
-
Step 900
900
#12319E
oklch(37.6% 0.179 265.3)
-
Step 950
950
#0B1F5D
oklch(27.1% 0.114 265.4)
#1234CA 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) | #0053CE | 0.065 |
| Deuteranopia (no green cones) | #0041C7 | 0.024 |
| Tritanopia (no blue cones) | #00617C | 0.175 |
| Achromatopsia (no color) | #4A4A4A | 0.231 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1234CA
#1234CA
oklch(42.8% 0.23 265.4)
- #654B00
#654B00
oklch(42.9% 0.088 85.7)
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 #1234CA, closest first.
No curated palette has a color within ΔE 0.04 of #1234CA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.032
- Ultramarine Blue #1805DB ΔE 0.048
- Majorelle Blue #3F37C9 ΔE 0.049
- True Blue #010FCC ΔE 0.050
- Sapphire #2138AB ΔE 0.051
- Pure Blue #0203E2 ΔE 0.057
- Medium Blue #0000CD ΔE 0.058
- Indigo Blue #3A18B1 ΔE 0.071
Use #1234CA 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.