#4274A2
Closest named color: Flat Blue (#3C73A8). oklch(54.4% 0.09 247.9), rgb(66, 116, 162).
Aa
White text reads best on this color (4.93:1).
About this color
#4274A2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.090 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.012 away. White text reads best on it, at 4.93:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.25:1 |
| White text | 4.93:1 |
Values
| HEX | #4274A2 |
| RGB | rgb(66, 116, 162) |
| HSL | hsl(209, 42%, 45%) |
| OKLCH | oklch(54.4% 0.09 247.9) |
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 #4274A2 | 4.93:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #4274A2 | 4.25:1 | AA large text | Lc 30.0 | Non-text elements, placeholder text |
| #4274A2 text on white | 4.93:1 | AA | Lc 74.0 | Content text, not long reading |
| #4274A2 text on black | 4.25:1 | AA large text | Lc -27.7 | 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 600.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ADC4DA
oklch(81% 0.04 247.1)
-
Step 400
400
#81A5C8
oklch(70.8% 0.065 248)
-
Step 500
500
#608EBA
oklch(63.1% 0.083 248.2)
-
Step 600
600 (this color)
#4274A2
oklch(54.4% 0.09 247.9)
-
Step 700
700
#37648E
oklch(49% 0.084 248.4)
-
Step 800
800
#2E5273
oklch(42.7% 0.069 247.8)
-
Step 900
900
#29445D
oklch(37.7% 0.054 247.6)
-
Step 950
950
#192837
oklch(27.1% 0.035 249.2)
#4274A2 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) | #6075A4 | 0.035 |
| Deuteranopia (no green cones) | #546CA1 | 0.028 |
| Tritanopia (no blue cones) | #007F84 | 0.075 |
| Achromatopsia (no color) | #707070 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4274A2
#4274A2
oklch(54.4% 0.09 247.9)
- #926530
#926530
oklch(54.3% 0.09 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 #4274A2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.012
- Muted Blue #3B719F ΔE 0.012
- Dull Blue #49759C ΔE 0.013
- Cerulean #457B9D ΔE 0.025
- Stormy Blue #507B9C ΔE 0.030
- Metallic Blue #4F738E ΔE 0.033
- Nice Blue #107AB0 ΔE 0.034
- French Blue #436BAD ΔE 0.035
Use #4274A2 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.