#2D5F91
Closest named color: Denim Blue (#3B5B92). oklch(47.5% 0.098 250.6), rgb(45, 95, 145).
Aa
White text reads best on this color (6.65:1).
About this color
#2D5F91 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.098 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.017 away. White text reads best on it, at 6.65:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.15:1 |
| White text | 6.65:1 |
Values
| HEX | #2D5F91 |
| RGB | rgb(45, 95, 145) |
| HSL | hsl(210, 53%, 37%) |
| OKLCH | oklch(47.5% 0.098 250.6) |
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 #2D5F91 | 6.65:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #2D5F91 | 3.15:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #2D5F91 text on white | 6.65:1 | AA | Lc 82.6 | Fine for body text |
| #2D5F91 text on black | 3.15:1 | AA large text | Lc -19.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEA
oklch(88.5% 0.026 250)
-
Step 300
300
#ABC4DF
oklch(81% 0.047 250.4)
-
Step 400
400
#7DA4CF
oklch(70.6% 0.076 251.4)
-
Step 500
500
#5B8DC2
oklch(63% 0.097 250.9)
-
Step 600
600
#4077AE
oklch(55.7% 0.104 250.2)
-
Step 700
700 (this color)
#2D5F91
oklch(47.5% 0.098 250.6)
-
Step 800
800
#2A517A
oklch(42.6% 0.082 251.3)
-
Step 900
900
#264462
oklch(37.8% 0.063 249.8)
-
Step 950
950
#172839
oklch(27.1% 0.039 249.5)
#2D5F91 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) | #496293 | 0.033 |
| Deuteranopia (no green cones) | #3B5890 | 0.023 |
| Tritanopia (no blue cones) | #006B71 | 0.076 |
| Achromatopsia (no color) | #5C5C5C | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5F91
#2D5F91
oklch(47.5% 0.098 250.6)
- #7E510C
#7E510C
oklch(47.4% 0.097 70.7)
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 #2D5F91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.017
- Light Navy Blue #2E5A88 ΔE 0.019
- Denim #3B638C ΔE 0.022
- Peacock Blue #016795 ΔE 0.028
- Dusky Blue #475F94 ΔE 0.029
- Dusk Blue #26538D ΔE 0.037
- YInMn Blue #415A77 ΔE 0.044
- Dusk #4E5481 ΔE 0.048
Use #2D5F91 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.