#375DCC
Closest named color: Warm Blue (#4B57DB). oklch(51.6% 0.178 266), rgb(55, 93, 204).
Aa
White text reads best on this color (5.83:1).
About this color
#375DCC is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.178 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.034 away. White text reads best on it, at 5.83:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.60:1 |
| White text | 5.83:1 |
Values
| HEX | #375DCC |
| RGB | rgb(55, 93, 204) |
| HSL | hsl(225, 59%, 51%) |
| OKLCH | oklch(51.6% 0.178 266) |
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 #375DCC | 5.83:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #375DCC | 3.60:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #375DCC text on white | 5.83:1 | AA | Lc 78.7 | Fine for body text |
| #375DCC text on black | 3.60:1 | AA large text | Lc -23.1 | 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 700.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A7C0F9
oklch(80.9% 0.086 266.1)
-
Step 400
400
#789DF6
oklch(70.7% 0.137 265.9)
-
Step 500
500
#5781F3
oklch(63.1% 0.177 266.2)
-
Step 600
600
#3E68E1
oklch(55.7% 0.19 265.9)
-
Step 700
700 (this color)
#375DCC
oklch(51.6% 0.178 266)
-
Step 800
800
#28479E
oklch(42.8% 0.146 265.7)
-
Step 900
900
#253C7E
oklch(37.7% 0.115 266.4)
-
Step 950
950
#16244A
oklch(27.1% 0.073 266.4)
#375DCC 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) | #006CD0 | 0.042 |
| Deuteranopia (no green cones) | #005ECA | 0.030 |
| Tritanopia (no blue cones) | #00788B | 0.142 |
| Achromatopsia (no color) | #656565 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375DCC
#375DCC
oklch(51.6% 0.178 266)
- #836200
#836200
oklch(51.6% 0.106 85.5)
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 #375DCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.034
- Royal Blue #4169E1 ΔE 0.045
- Azul #1D5DEC ΔE 0.052
- Iris #6258C4 ΔE 0.055
- Neon Blue #4361EE ΔE 0.055
- Mid Blue #276AB3 ΔE 0.056
- Dark Periwinkle #665FD1 ΔE 0.061
- Cerulean Blue #056EEE ΔE 0.065
Use #375DCC 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.