#2D59BB
Closest named color: Mid Blue (#276AB3). oklch(49% 0.162 263.4), rgb(45, 89, 187).
Aa
White text reads best on this color (6.44:1).
About this color
#2D59BB is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.162 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.049 away. White text reads best on it, at 6.44:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.25:1 |
| White text | 6.44:1 |
Values
| HEX | #2D59BB |
| RGB | rgb(45, 89, 187) |
| HSL | hsl(221, 61%, 45%) |
| OKLCH | oklch(49% 0.162 263.4) |
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 #2D59BB | 6.44:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #2D59BB | 3.25:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #2D59BB text on white | 6.44:1 | AA | Lc 81.5 | Fine for body text |
| #2D59BB text on black | 3.25:1 | AA large text | Lc -20.3 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CADAF7
oklch(88.5% 0.044 262.4)
-
Step 300
300
#A6C1F4
oklch(80.9% 0.078 262.9)
-
Step 400
400
#779FEF
oklch(70.7% 0.126 263.3)
-
Step 500
500
#5585EA
oklch(63.2% 0.161 263.4)
-
Step 600
600
#3B6CD8
oklch(55.7% 0.174 263.4)
-
Step 700
700 (this color)
#2D59BB
oklch(49% 0.162 263.4)
-
Step 800
800
#264997
oklch(42.6% 0.134 263.5)
-
Step 900
900
#233E79
oklch(37.7% 0.106 263.6)
-
Step 950
950
#152547
oklch(27.1% 0.067 263.6)
#2D59BB 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) | #1565BE | 0.032 |
| Deuteranopia (no green cones) | #0058B9 | 0.024 |
| Tritanopia (no blue cones) | #007181 | 0.129 |
| Achromatopsia (no color) | #5E5E5E | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D59BB
#2D59BB
oklch(49% 0.162 263.4)
- #7C5A00
#7C5A00
oklch(49% 0.101 82.9)
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 #2D59BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.049
- Blue Blue #2242C7 ΔE 0.060
- Warm Blue #4B57DB ΔE 0.061
- French Blue #436BAD ΔE 0.063
- Iris #6258C4 ΔE 0.068
- Denim Blue #3B5B92 ΔE 0.068
- Dusky Blue #475F94 ΔE 0.072
- Royal Blue #4169E1 ΔE 0.075
Use #2D59BB 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.