#2561A2
Closest named color: Denim Blue (#3B5B92). oklch(48.8% 0.121 253.1), rgb(37, 97, 162).
Aa
White text reads best on this color (6.34:1).
About this color
#2561A2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.121 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.031 away. White text reads best on it, at 6.34:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.31:1 |
| White text | 6.34:1 |
Values
| HEX | #2561A2 |
| RGB | rgb(37, 97, 162) |
| HSL | hsl(211, 63%, 39%) |
| OKLCH | oklch(48.8% 0.121 253.1) |
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 #2561A2 | 6.34:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #2561A2 | 3.31:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #2561A2 text on white | 6.34:1 | AA | Lc 81.2 | Fine for body text |
| #2561A2 text on black | 3.31:1 | AA large text | Lc -20.7 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A6C3E6
oklch(80.8% 0.059 253.3)
-
Step 400
400
#76A4DA
oklch(70.7% 0.094 253)
-
Step 500
500
#518CD0
oklch(63% 0.12 253.2)
-
Step 600
600
#3475BD
oklch(55.6% 0.13 253.2)
-
Step 700
700 (this color)
#2561A2
oklch(48.8% 0.121 253.1)
-
Step 800
800
#215084
oklch(42.6% 0.101 253.2)
-
Step 900
900
#21436A
oklch(37.7% 0.078 253.3)
-
Step 950
950
#14273E
oklch(26.9% 0.05 254.1)
#2561A2 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) | #4266A5 | 0.033 |
| Deuteranopia (no green cones) | #2E5AA1 | 0.020 |
| Tritanopia (no blue cones) | #007079 | 0.092 |
| Achromatopsia (no color) | #5F5F5F | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2561A2
#2561A2
oklch(48.8% 0.121 253.1)
- #835500
#835500
oklch(48.9% 0.104 73.1)
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 #2561A2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.031
- Peacock Blue #016795 ΔE 0.033
- Mid Blue #276AB3 ΔE 0.035
- Dusky Blue #475F94 ΔE 0.038
- Denim #3B638C ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.043
- French Blue #436BAD ΔE 0.045
- Dusk Blue #26538D ΔE 0.049
Use #2561A2 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.