#375AAE
Closest named color: Mid Blue (#276AB3). oklch(48.7% 0.14 264.7), rgb(55, 90, 174).
Aa
White text reads best on this color (6.48:1).
About this color
#375AAE is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.140 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.043 away. White text reads best on it, at 6.48:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.23:1 |
| White text | 6.48:1 |
Values
| HEX | #375AAE |
| RGB | rgb(55, 90, 174) |
| HSL | hsl(222, 52%, 45%) |
| OKLCH | oklch(48.7% 0.14 264.7) |
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 #375AAE | 6.48:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #375AAE | 3.23:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #375AAE text on white | 6.48:1 | AA | Lc 81.9 | Fine for body text |
| #375AAE text on black | 3.23:1 | AA large text | Lc -20.0 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDD9F3
oklch(88.4% 0.038 265.8)
-
Step 300
300
#ABC1ED
oklch(80.9% 0.067 264.1)
-
Step 400
400
#7F9FE5
oklch(70.7% 0.109 265)
-
Step 500
500
#5F86DD
oklch(63.1% 0.138 264.5)
-
Step 600
600
#466ECB
oklch(55.7% 0.151 264.5)
-
Step 700
700 (this color)
#375AAE
oklch(48.7% 0.14 264.7)
-
Step 800
800
#2F4B8E
oklch(42.8% 0.116 264.9)
-
Step 900
900
#293F71
oklch(37.7% 0.09 264.6)
-
Step 950
950
#182542
oklch(26.9% 0.057 264.6)
#375AAE 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) | #2D64B1 | 0.027 |
| Deuteranopia (no green cones) | #1159AC | 0.029 |
| Tritanopia (no blue cones) | #006E7B | 0.116 |
| Achromatopsia (no color) | #5E5E5E | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375AAE
#375AAE
oklch(48.7% 0.14 264.7)
- #7A5A00
#7A5A00
oklch(48.8% 0.1 84.4)
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 #375AAE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.050
- French Blue #436BAD ΔE 0.051
- Dusk Blue #26538D ΔE 0.059
- Twilight #4E518B ΔE 0.062
- Light Navy Blue #2E5A88 ΔE 0.063
- Denim #3B638C ΔE 0.065
Use #375AAE 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.