#1959CB
Closest named color: Azul (#1D5DEC). oklch(49.7% 0.188 261.1), rgb(25, 89, 203).
Aa
White text reads best on this color (6.30:1).
About this color
#1959CB is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.188 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.052 away. White text reads best on it, at 6.30:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.33:1 |
| White text | 6.30:1 |
Values
| HEX | #1959CB |
| RGB | rgb(25, 89, 203) |
| HSL | hsl(218, 78%, 45%) |
| OKLCH | oklch(49.7% 0.188 261.1) |
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 #1959CB | 6.30:1 | AA | Lc -85.8 | Fine for body text |
| Black text on #1959CB | 3.33:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #1959CB text on white | 6.30:1 | AA | Lc 80.7 | Fine for body text |
| #1959CB text on black | 3.33:1 | AA large text | Lc -21.2 | 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
#E0EAFC
oklch(93.5% 0.027 262.3)
-
Step 200
200
#C7DAFB
oklch(88.5% 0.05 261.5)
-
Step 300
300
#A0C2FC
oklch(81% 0.09 260.9)
-
Step 400
400
#6B9FFB
oklch(70.7% 0.146 261.1)
-
Step 500
500
#4384F8
oklch(63.1% 0.186 260.9)
-
Step 600
600
#246AE7
oklch(55.6% 0.202 261)
-
Step 700
700 (this color)
#1959CB
oklch(49.7% 0.188 261.1)
-
Step 800
800
#1648A2
oklch(42.7% 0.155 261.1)
-
Step 900
900
#183E81
oklch(37.8% 0.121 260.8)
-
Step 950
950
#0F254B
oklch(27% 0.076 260.5)
#1959CB 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 | 0.037 |
| Deuteranopia (no green cones) | #0058C9 | 0.010 |
| Tritanopia (no blue cones) | #007689 | 0.145 |
| Achromatopsia (no color) | #606060 | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1959CB
#1959CB
oklch(49.7% 0.188 261.1)
- #805B00
#805B00
oklch(49.7% 0.103 81)
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 #1959CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.052
- Warm Blue #4B57DB ΔE 0.052
- Blue Blue #2242C7 ΔE 0.052
- Mid Blue #276AB3 ΔE 0.063
- Royal Blue #4169E1 ΔE 0.065
- Neon Blue #4361EE ΔE 0.070
- Cerulean Blue #056EEE ΔE 0.073
- Majorelle Blue #3F37C9 ΔE 0.074
Use #1959CB 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.