#2159AD
Closest named color: Mid Blue (#276AB3). oklch(47.6% 0.147 258.8), rgb(33, 89, 173).
Aa
White text reads best on this color (6.78:1).
About this color
#2159AD is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.147 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.048 away. White text reads best on it, at 6.78:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.09:1 |
| White text | 6.78:1 |
Values
| HEX | #2159AD |
| RGB | rgb(33, 89, 173) |
| HSL | hsl(216, 68%, 40%) |
| OKLCH | oklch(47.6% 0.147 258.8) |
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 #2159AD | 6.78:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #2159AD | 3.09:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #2159AD text on white | 6.78:1 | AA | Lc 82.9 | Fine for body text |
| #2159AD text on black | 3.09:1 | AA large text | Lc -19.0 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF8
oklch(93.7% 0.02 257.5)
-
Step 200
200
#CADAF4
oklch(88.4% 0.04 260.1)
-
Step 300
300
#A5C2EF
oklch(80.8% 0.071 259.1)
-
Step 400
400
#74A2E7
oklch(70.8% 0.113 258.3)
-
Step 500
500
#5089E0
oklch(63.2% 0.145 258.6)
-
Step 600
600
#3370CE
oklch(55.5% 0.159 259)
-
Step 700
700 (this color)
#2159AD
oklch(47.6% 0.147 258.8)
-
Step 800
800
#214D90
oklch(42.7% 0.121 258.8)
-
Step 900
900
#204173
oklch(37.8% 0.094 258.6)
-
Step 950
950
#132643
oklch(26.9% 0.06 258.6)
#2159AD 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) | #2962B0 | 0.027 |
| Deuteranopia (no green cones) | #0055AB | 0.020 |
| Tritanopia (no blue cones) | #006D7A | 0.113 |
| Achromatopsia (no color) | #5B5B5B | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2159AD
#2159AD
oklch(47.6% 0.147 258.8)
- #7A5400
#7A5400
oklch(47.5% 0.099 78.4)
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 #2159AD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.050
- Dusk Blue #26538D ΔE 0.052
- Dusky Blue #475F94 ΔE 0.060
- Light Navy Blue #2E5A88 ΔE 0.061
- Peacock Blue #016795 ΔE 0.061
- French Blue #436BAD ΔE 0.064
- Cobalt #1E488F ΔE 0.065
Use #2159AD 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.