#2A75A5
Closest named color: Flat Blue (#3C73A8). oklch(53.9% 0.104 241), rgb(42, 117, 165).
Aa
White text reads best on this color (5.01:1).
About this color
#2A75A5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.104 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.016 away. White text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.18:1 |
| White text | 5.01:1 |
Values
| HEX | #2A75A5 |
| RGB | rgb(42, 117, 165) |
| HSL | hsl(203, 59%, 41%) |
| OKLCH | oklch(53.9% 0.104 241) |
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 #2A75A5 | 5.01:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #2A75A5 | 4.18:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #2A75A5 text on white | 5.01:1 | AA | Lc 74.4 | Content text, not long reading |
| #2A75A5 text on black | 4.18:1 | AA large text | Lc -27.3 | 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 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
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A6C5DD
oklch(80.9% 0.048 241.5)
-
Step 400
400
#75A7CB
oklch(70.6% 0.075 240.4)
-
Step 500
500
#4F91BE
oklch(63.2% 0.096 240.4)
-
Step 600
600 (this color)
#2A75A5
oklch(53.9% 0.104 241)
-
Step 700
700
#226792
oklch(49.2% 0.096 240.6)
-
Step 800
800
#1E5477
oklch(42.7% 0.081 241)
-
Step 900
900
#1F4660
oklch(37.8% 0.063 240.4)
-
Step 950
950
#132938
oklch(27% 0.04 240.2)
#2A75A5 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) | #5F76A7 | 0.053 |
| Deuteranopia (no green cones) | #4E6AA4 | 0.042 |
| Tritanopia (no blue cones) | #008186 | 0.071 |
| Achromatopsia (no color) | #6F6F6F | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A75A5
#2A75A5
oklch(53.9% 0.104 241)
- #995E26
#995E26
oklch(53.7% 0.104 60.7)
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 #2A75A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.016
- Muted Blue #3B719F ΔE 0.016
- Nice Blue #107AB0 ΔE 0.021
- Ocean Blue #03719C ΔE 0.025
- Dull Blue #49759C ΔE 0.029
- Sea Blue #047495 ΔE 0.032
- Cerulean #457B9D ΔE 0.034
- French Blue #436BAD ΔE 0.038
Use #2A75A5 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.