#2C75DD
Closest named color: Royal Blue (#4169E1). oklch(57.4% 0.175 258.1), rgb(44, 117, 221).
Aa
Black text reads best on this color (4.69:1).
About this color
#2C75DD is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.175 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.033 away. Black text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #2C75DD |
| RGB | rgb(44, 117, 221) |
| HSL | hsl(215, 72%, 52%) |
| OKLCH | oklch(57.4% 0.175 258.1) |
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 #2C75DD | 4.47:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #2C75DD | 4.69:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #2C75DD text on white | 4.47:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #2C75DD text on black | 4.69:1 | AA | Lc -31.1 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF7
oklch(88.6% 0.044 258)
-
Step 300
300
#A1C3F4
oklch(81% 0.079 257.5)
-
Step 400
400
#6EA2EE
oklch(70.8% 0.125 257.8)
-
Step 500
500
#4688E9
oklch(63.1% 0.161 258.1)
-
Step 600
600 (this color)
#2C75DD
oklch(57.4% 0.175 258.1)
-
Step 700
700
#185CBA
oklch(49% 0.163 258.2)
-
Step 800
800
#174C97
oklch(42.7% 0.135 258.2)
-
Step 900
900
#1A4078
oklch(37.7% 0.105 258.3)
-
Step 950
950
#102646
oklch(27% 0.066 257.9)
#2C75DD 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) | #3A80E1 | 0.033 |
| Deuteranopia (no green cones) | #0070DB | 0.023 |
| Tritanopia (no blue cones) | #008E9E | 0.134 |
| Achromatopsia (no color) | #777777 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C75DD
#2C75DD
oklch(57.4% 0.175 258.1)
- #9F6E00
#9F6E00
oklch(57.4% 0.12 77.9)
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 #2C75DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.033
- Cerulean Blue #056EEE ΔE 0.037
- Clear Blue #247AFD ΔE 0.049
- Windows Blue #3778BF ΔE 0.049
- Neon Blue #4361EE ΔE 0.057
- Water Blue #0E87CC ΔE 0.059
- Bright Blue #0165FC ΔE 0.066
- Azul #1D5DEC ΔE 0.067
Use #2C75DD 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.