#1259CB
Closest named color: Blue Blue (#2242C7). oklch(49.6% 0.19 260.3), rgb(18, 89, 203).
Aa
White text reads best on this color (6.33:1).
About this color
#1259CB is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.190 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.052 away. White text reads best on it, at 6.33:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.190) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #1259CB |
| RGB | rgb(18, 89, 203) |
| HSL | hsl(217, 84%, 43%) |
| OKLCH | oklch(49.6% 0.19 260.3) |
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 #1259CB | 6.33:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #1259CB | 3.31:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #1259CB text on white | 6.33:1 | AA | Lc 80.7 | Fine for body text |
| #1259CB text on black | 3.31:1 | AA large text | Lc -21.1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9EC2FC
oklch(80.9% 0.091 259.8)
-
Step 400
400
#69A0FB
oklch(70.8% 0.146 260)
-
Step 500
500
#4084F9
oklch(63.1% 0.188 260.5)
-
Step 600
600
#1E6AE8
oklch(55.6% 0.205 260.4)
-
Step 700
700 (this color)
#1259CB
oklch(49.6% 0.19 260.3)
-
Step 800
800
#1148A3
oklch(42.6% 0.158 260.4)
-
Step 900
900
#163E81
oklch(37.7% 0.122 260.2)
-
Step 950
950
#0E254C
oklch(27.1% 0.078 260.3)
#1259CB 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) | #0068CF | 0.038 |
| Deuteranopia (no green cones) | #0058C9 | 0.007 |
| Tritanopia (no blue cones) | #007689 | 0.145 |
| Achromatopsia (no color) | #606060 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1259CB
#1259CB
oklch(49.6% 0.19 260.3)
- #805A00
#805A00
oklch(49.5% 0.103 80)
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 #1259CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.052
- Azul #1D5DEC ΔE 0.053
- Warm Blue #4B57DB ΔE 0.055
- Mid Blue #276AB3 ΔE 0.064
- Royal Blue #4169E1 ΔE 0.067
- Neon Blue #4361EE ΔE 0.072
- Cerulean Blue #056EEE ΔE 0.073
- Majorelle Blue #3F37C9 ΔE 0.075
Use #1259CB 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.