#0259BD
Closest named color: Blue Blue (#2242C7). oklch(48.2% 0.173 257.5), rgb(2, 89, 189).
Aa
White text reads best on this color (6.63:1).
About this color
#0259BD is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.173 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.055 away. White text reads best on it, at 6.63:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.16:1 |
| White text | 6.63:1 |
Values
| HEX | #0259BD |
| RGB | rgb(2, 89, 189) |
| HSL | hsl(212, 98%, 37%) |
| OKLCH | oklch(48.2% 0.173 257.5) |
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 #0259BD | 6.63:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #0259BD | 3.16:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #0259BD text on white | 6.63:1 | AA | Lc 82.0 | Fine for body text |
| #0259BD text on black | 3.16:1 | AA large text | Lc -19.9 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF8
oklch(88.5% 0.046 256.5)
-
Step 300
300
#9FC3F7
oklch(81% 0.084 257.5)
-
Step 400
400
#69A2F3
oklch(70.8% 0.134 257.3)
-
Step 500
500
#3E88EF
oklch(63.2% 0.171 257.4)
-
Step 600
600
#186FDD
oklch(55.7% 0.186 257.3)
-
Step 700
700 (this color)
#0259BD
oklch(48.2% 0.173 257.5)
-
Step 800
800
#0D4C9B
oklch(42.8% 0.142 257.3)
-
Step 900
900
#14407B
oklch(37.7% 0.111 257.2)
-
Step 950
950
#0E2648
oklch(27% 0.07 257.6)
#0259BD 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) | #0365C1 | 0.032 |
| Deuteranopia (no green cones) | #0055BB | 0.011 |
| Tritanopia (no blue cones) | #007282 | 0.131 |
| Achromatopsia (no color) | #5D5D5D | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0259BD
#0259BD
oklch(48.2% 0.173 257.5)
- #7D5500
#7D5500
oklch(48.1% 0.101 77.2)
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 #0259BD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.055
- Mid Blue #276AB3 ΔE 0.056
- Warm Blue #4B57DB ΔE 0.073
- Azul #1D5DEC ΔE 0.075
- French Blue #436BAD ΔE 0.076
- Denim Blue #3B5B92 ΔE 0.077
- Dusk Blue #26538D ΔE 0.077
- Peacock Blue #016795 ΔE 0.080
Use #0259BD 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.