#2D7DAD
Closest named color: Nice Blue (#107AB0). oklch(56.3% 0.106 239.3), rgb(45, 125, 173).
Aa
Black text reads best on this color (4.64:1).
About this color
#2D7DAD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.106 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.018 away. Black text reads best on it, at 4.64:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.64:1 |
| White text | 4.51:1 |
Values
| HEX | #2D7DAD |
| RGB | rgb(45, 125, 173) |
| HSL | hsl(203, 59%, 43%) |
| OKLCH | oklch(56.3% 0.106 239.3) |
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 #2D7DAD | 4.51:1 | AA | Lc -76.5 | Fine for body text |
| Black text on #2D7DAD | 4.64:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #2D7DAD text on white | 4.51:1 | AA | Lc 71.1 | Content text, not long reading |
| #2D7DAD text on black | 4.64:1 | AA | Lc -30.6 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE9
oklch(88.5% 0.026 239.1)
-
Step 300
300
#A5C6DD
oklch(81% 0.048 238.6)
-
Step 400
400
#73A8CC
oklch(70.8% 0.077 239)
-
Step 500
500
#4C91BE
oklch(63% 0.097 239.4)
-
Step 600
600 (this color)
#2D7DAD
oklch(56.3% 0.106 239.3)
-
Step 700
700
#1C6793
oklch(49.1% 0.1 239.9)
-
Step 800
800
#1A5477
oklch(42.6% 0.082 239.7)
-
Step 900
900
#1D4660
oklch(37.8% 0.064 239.4)
-
Step 950
950
#122938
oklch(27% 0.04 239.2)
#2D7DAD 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) | #677DAF | 0.057 |
| Deuteranopia (no green cones) | #5571AC | 0.046 |
| Tritanopia (no blue cones) | #00898E | 0.071 |
| Achromatopsia (no color) | #767676 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D7DAD
#2D7DAD
oklch(56.3% 0.106 239.3)
- #A3652D
#A3652D
oklch(56.4% 0.107 59.8)
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 #2D7DAD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.018
- Steel Blue #4682B4 ΔE 0.028
- Flat Blue #3C73A8 ΔE 0.028
- Cerulean #457B9D ΔE 0.029
- Dull Blue #49759C ΔE 0.034
- Windows Blue #3778BF ΔE 0.035
- Cool Blue #4984B8 ΔE 0.036
- Muted Blue #3B719F ΔE 0.036
Use #2D7DAD 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.