#455FBF
Closest named color: Iris (#6258C4). oklch(51.7% 0.153 269.1), rgb(69, 95, 191).
Aa
White text reads best on this color (5.76:1).
About this color
#455FBF is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.153 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.042 away. White text reads best on it, at 5.76:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.64:1 |
| White text | 5.76:1 |
Values
| HEX | #455FBF |
| RGB | rgb(69, 95, 191) |
| HSL | hsl(227, 49%, 51%) |
| OKLCH | oklch(51.7% 0.153 269.1) |
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 #455FBF | 5.76:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #455FBF | 3.64:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #455FBF text on white | 5.76:1 | AA | Lc 78.5 | Fine for body text |
| #455FBF text on black | 3.64:1 | AA large text | Lc -23.3 | 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 700.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F5
oklch(88.6% 0.04 268.5)
-
Step 300
300
#ADBFF1
oklch(80.8% 0.074 269.3)
-
Step 400
400
#829DEB
oklch(70.7% 0.119 268.7)
-
Step 500
500
#6482E4
oklch(63% 0.151 268.9)
-
Step 600
600
#4D69D2
oklch(55.5% 0.164 269.2)
-
Step 700
700 (this color)
#455FBF
oklch(51.7% 0.153 269.1)
-
Step 800
800
#334894
oklch(42.8% 0.127 268.9)
-
Step 900
900
#2C3D76
oklch(37.7% 0.099 268.8)
-
Step 950
950
#1A2445
oklch(27% 0.063 269.2)
#455FBF 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) | #2A6BC2 | 0.036 |
| Deuteranopia (no green cones) | #0561BD | 0.043 |
| Tritanopia (no blue cones) | #007586 | 0.128 |
| Achromatopsia (no color) | #666666 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455FBF
#455FBF
oklch(51.7% 0.153 269.1)
- #806400
#806400
oklch(51.7% 0.106 89.4)
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 #455FBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.042
- Mid Blue #276AB3 ΔE 0.044
- French Blue #436BAD ΔE 0.047
- Warm Blue #4B57DB ΔE 0.049
- Dark Periwinkle #665FD1 ΔE 0.053
- Royal Blue #4169E1 ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.062
Use #455FBF 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.