#297DC2
Closest named color: Windows Blue (#3778BF). oklch(57.4% 0.132 247.8), rgb(41, 125, 194).
Aa
Black text reads best on this color (4.80:1).
About this color
#297DC2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.132 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.015 away. Black text reads best on it, at 4.80:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.80:1 |
| White text | 4.36:1 |
Values
| HEX | #297DC2 |
| RGB | rgb(41, 125, 194) |
| HSL | hsl(207, 65%, 46%) |
| OKLCH | oklch(57.4% 0.132 247.8) |
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 #297DC2 | 4.36:1 | AA large text | Lc -75.4 | Fine for body text |
| Black text on #297DC2 | 4.80:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #297DC2 text on white | 4.36:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #297DC2 text on black | 4.80:1 | AA | Lc -31.8 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCEE
oklch(88.6% 0.032 246.7)
-
Step 300
300
#A3C5E6
oklch(81% 0.059 247.8)
-
Step 400
400
#6FA6D9
oklch(70.7% 0.095 247.5)
-
Step 500
500
#468FCF
oklch(63.2% 0.121 247.5)
-
Step 600
600 (this color)
#297DC2
oklch(57.4% 0.132 247.8)
-
Step 700
700
#1364A2
oklch(49% 0.123 247.9)
-
Step 800
800
#145283
oklch(42.7% 0.101 247.5)
-
Step 900
900
#194469
oklch(37.6% 0.079 247.8)
-
Step 950
950
#10283E
oklch(27% 0.051 248.4)
#297DC2 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) | #5D80C5 | 0.048 |
| Deuteranopia (no green cones) | #4672C1 | 0.034 |
| Tritanopia (no blue cones) | #008E96 | 0.097 |
| Achromatopsia (no color) | #797979 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #297DC2
#297DC2
oklch(57.4% 0.132 247.8)
- #A86800
#A86800
oklch(57.4% 0.126 68.3)
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 #297DC2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.015
- Water Blue #0E87CC ΔE 0.029
- Nice Blue #107AB0 ΔE 0.032
- Steel Blue #4682B4 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.044
- Blue NCS #118AB2 ΔE 0.050
- French Blue #436BAD ΔE 0.054
Use #297DC2 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.