#2D5397
Closest named color: Dusk Blue (#26538D). oklch(45.1% 0.12 261), rgb(45, 83, 151).
Aa
White text reads best on this color (7.51:1).
About this color
#2D5397 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.120 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.018 away. White text reads best on it, at 7.51:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.79:1 |
| White text | 7.51:1 |
Values
| HEX | #2D5397 |
| RGB | rgb(45, 83, 151) |
| HSL | hsl(218, 54%, 38%) |
| OKLCH | oklch(45.1% 0.12 261) |
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 #2D5397 | 7.51:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #2D5397 | 2.79:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #2D5397 text on white | 7.51:1 | AAA | Lc 85.8 | Fine for body text |
| #2D5397 text on black | 2.79:1 | Fails | Lc -16.2 | 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 800.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF4
oklch(88.5% 0.039 261.5)
-
Step 300
300
#A7C2EE
oklch(80.9% 0.069 260.1)
-
Step 400
400
#79A1E6
oklch(70.8% 0.111 260.9)
-
Step 500
500
#5687DF
oklch(63% 0.143 261.2)
-
Step 600
600
#3B6FCD
oklch(55.5% 0.156 261.1)
-
Step 700
700
#2E5DB1
oklch(49.2% 0.143 261)
-
Step 800
800 (this color)
#2D5397
oklch(45.1% 0.12 261)
-
Step 900
900
#244072
oklch(37.7% 0.092 261.1)
-
Step 950
950
#152643
oklch(27% 0.059 260.5)
#2D5397 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) | #325A9A | 0.021 |
| Deuteranopia (no green cones) | #1F5096 | 0.016 |
| Tritanopia (no blue cones) | #00636D | 0.097 |
| Achromatopsia (no color) | #555555 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5397
#2D5397
oklch(45.1% 0.12 261)
- #704F00
#704F00
oklch(45.2% 0.093 80.8)
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 #2D5397, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.018
- Denim Blue #3B5B92 ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.035
- Cobalt #1E488F ΔE 0.038
- Light Navy #155084 ΔE 0.039
- Twilight #4E518B ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.050
Use #2D5397 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.